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Physics

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1
Q.1. A concave spherical mirror has a radius of curvature of 30 cm. An object was placed 15 cm away from the pole in front of the mirror on the principal axis. The image formed will be:
  • At the focus, highly diminished
    point-sized, real and inverted
  • Between Focus and Centre,
    diminished, real and inverted
  • At infinity, highly enlarged, real and inverted
  • Behind the mirror, enlarged, virtual
    and erect
2
Q.2. In optics, which term refers to the opening of the diaphragm of a lens that spatially limits the propagation of light?
  • Aperture
  • Collimator
  • Apostilb
  • Meniscus
3
Q.3. White light is an example of:
  • Polychromatic light
  • laser light
  • monochromatic light
  • laser light
4
Q.4. Which telescope was invented by Isaac Newton in the 17th century by using a concave mirror to collect light instead of a simple lens which produces false colors due to the dispersion of light?
  • Reflecting telescope
  • Infrared telescope
  • Monocular telescope
  • Graphic telescope
5
Q.5. The minimum distance of distinct vision for a young adult person with no defect in eyes is:
  • 25 cm
  • 20 m
  • 20 cm
  • 25 m
6
Q.6. Which colour of light from VIBGYOR has minimum energy?
  • Red
  • Green
  • Violet
  • Yellow
7
Q.7. Why can you not see objects in a dim lit room when you come from a brightly lit room?
  • The iris contracts the pupil to allow less light to enter the eye.
  • The iris dilates the eye lens to allow
    less light to enter the eye.
  • The vitreous humour dilates the pupil
    to allow less light to enter the eye.
  • The cornea contracts the pupil to
    allow less light to enter the eye.
8
Q.8. What will be the focal length of a convex lens with the power of a +2.5 Diopter?
  • 40 cm
  • 20 cm
  • 10 cm
  • 5 cm
9
Q.9. Raman wants to use a rear-view mirror in his vehicle. Which type of mirror should he pick for it?
  • Convex Mirrors
  • Plane Mirrors
  • Cylindrical Mirrors
  • Concave Mirrors
10
Q.10. An image formed by the convex mirror is always _________.
  • Virtual and erect
  • virtual and inverted
  • real and erect
  • real and inverted
11
Q.11. Which of the following statements regarding the lenses is/are correct?
  • Both I and II
  • Only II
  • Only I
  • Neither I nor II
12
Q.12. Which of the following pair of position of object – position of image – size of image, is NOT correct for concave mirror?
  • At infinity - At C - Highly diminished
  • At F - At infinity - Highly enlarged
  • Between C and F - Beyond C -
    Enlarged
  • Beyond C - Between F and C -
    Diminished
13
Q.13. If ‘u’ is the object-distance, ‘v’ is the image-distance and ‘f’ is the focal length of a spherical mirror then which of the following is a correct expression for the mirror formula?
  • 1/v + 1 = 1/f
  • 1/v + 1 = –1/f
  • 1/v – 1 = 1/f
  • 1/v – 1 = –1/f
14
Q.14. The splitting of white light into its component colours is called ______.
  • Dispersion
  • refraction
  • reflection
  • scattering
15
Q.15. The reflection on a bathroom mirror, the lake, and the glare on a pair of glasses are caused by which type of reflection?
  • Specular reflection
  • Multiple reflection
  • Glossy reflection
  • Diffused reflection
16
Q.16. Which of the following elements is NOT suitable for the fabrication of a light emitting diode structure?
  • Germanium
  • Gallium phosphide
  • Indium gallium nitride
  • Gallium arsenide
17
Q.17. Gold and copper happen to absorb ______ and violet light, leaving yellow light.
  • Blue
  • green
  • red
  • orange
18
Q.18. The absolute refractive index of ______ is 2.42.
  • Diamond
  • air
  • water
  • crown glass
19
Q.19. Apart from the red and green wavelengths of sunlight, which other wavelength of sunlight is absorbed by water molecules in the ocean?
  • Yellow
  • Orange
  • Blue
  • Violet
20
Q.20. Which of the following types of mirrors show a lateral inversion of light?
  • Plane mirror
  • Convex mirror
  • Concave mirror
  • Rectangle mirror
21
Q.21. The color of the clear sky is blue due to the phenomenon of:
  • Scattering of light
  • dispersion of light
  • reflection of light
  • refraction of light
22
Q.22. What is the full form of LED?
  • Light Emitting Diode
  • Linear Emergency Device
  • Liquid Emitting Display
  • Light Emitting Device
23
Q.23. Which phenomenon deals with the scattering of light by molecules of a medium when they are excited to vibrational energy levels?
  • Raman Effect
  • Maxwell Effect
  • Huygens Effect
  • Rayleigh Effect
24
Q.24. The phenomenon of deviation of light rays from their original path, when they pass from one medium to another, is called ____.
  • Refraction
  • obstruction
  • reflection
  • Diffraction
25
Q.25. What is the name of the phenomena (derived by scattering of the light) in which mountain tops acquire a rosy or orange hue around sunrise and sunset?
  • Alpenglow
  • Brillouin scattering
  • Circle of confusion
  • Barrel distortion
26
Q.26. The total number of images formed by two mirrors inclined at 120° to each other is ______.
  • 2
  • 1
  • 3
  • 4
27
Q.27. Which of the following best describes the process of calorimetry?
  • Measuring the amount of heat energy transferred
  • Measuring the amount of
    compressive strength
  • Measuring the amount of force
  • Measuring the amount of electricity
28
Q.28. In which method of cooking is food heated slowly over a source of heat and cooked by high heat and air convection depending on the position of the food in relation to the fire?
  • Spit-roasting
  • Braising
  • Poaching
  • Stewing
29
Q.29. Who coined the term 'zeroth law of thermodynamics' in 1931, which asserts that two bodies in equilibrium with a third are in equilibrium with each other?
  • Ralph H. Fowler
  • James Clerk Maxwell
  • Max Planck
  • Josiah Willard Gibbs
30
Q.30. Triple point can be defined as:
  • The condition of temperature and pressure under which the gaseous, liquid, and solid phases of a substance can exist in equilibrium
  • the condition of temperature under
    which the gaseous and liquid phases
    of a substance can exist in
    equilibrium
  • the temperature at which solid is
    converted into liquid
  • the condition of pressure under which
    the solid and liquid phases of a
    substance can exist in equilibrium
31
Q.31. According to law, heat produced by an electric current is directly proportional to the resistance of the conductor, the square of the current, and the time for which it flows.
  • Joule's
  • Hooke's
  • Charles's
  • Faraday's
32
Q.32. Tensile or compressive stress can also be termed as _______.
  • Longitudinal stress
  • tangential stress
  • hydraulic stress
  • shearing stress
33
Q.33. In which of the following ways of heat transfer no medium is required?
  • Radiation
  • Radiation and Conduction both
  • Conduction
  • Convection
34
Q.34. ______ is defined as the temperature to which the air would have to cool (at constant pressure and constant water vapour content) in order to reach saturation.
  • Dew point temperature
  • Air temperature
  • Relative humidity
  • Surface temperature
35
Q.35. What is the Steam Point on the Fahrenheit scale?
  • 212°F
  • 32°F
  • 100°F
  • 80°F
36
Q.36. Heat, in ______, is a type of energy transfer from a warmer substance to a colder one.
  • Thermodynamics
  • gravity
  • friction
  • magnet
37
Q.37. _______ expansion makes the Eiffel Tower taller during summers.
  • Thermal
  • slope
  • gravitational
  • chemical
38
Q.38. In 1851, who founded the science of hydrodynamics with his law of viscosity describing the velocity of a small sphere through a viscous fluid?
  • George Gabriel Stokes
  • Daniel Bernoulli
  • Evangelista Torricelli
  • Heinrich Gustav Magnus
39
Q.39. Whose law states that total energy per unit mass of flowing fluid, at any point in the subsurface, is the sum of the kinetic, potential, and fluid-pressure energy and is equal to a constant value?
  • Daniel Bernoulli
  • Evangelista Torricelli
  • Blaise Pascal
  • Marie Poiseuille
40
Q.40. _______ forces water through a semipermeable membrane and removes contaminants.
  • Reverse Osmosis
  • Boiling
  • Distillation
  • Filtration
41
Q.41. What is the relative density of silver?
  • 10.8
  • 9.5
  • 7.2
  • 10.4
42
Q.42. The neutral point in the magnetic field of a horizontally positioned bar magnet is the:
  • Point where the magnetic field is zero
  • point where the magnetic field
    changes direction
  • point where the magnetic field is the
    weakest
  • point where the magnetic field is the
    strongest
43
Q.43. In 1834, who proposed a law that states that the current induced by a change in flow opposes the effect producing the change?
  • Heinrich Friedrich Lenz
  • David Brewster
  • Henry Moseley
  • Christian Johann Doppler
44
Q.44. Which of the following options is correct for Coulomb's law?
  • Valid for only point charge
  • Valid for both point and distributed
    charges
  • Valid for only distributed charge
  • Valid for neither point charge nor
    distributed charge
45
Q.45. Which of the following laws state that “The magnitude of the induced EMF in a circuit is equal to the time rate of change of magnetic flux through the circuit”?
  • Faraday’s law
  • Coulomb’s law
  • Kirchhoff’s laws
  • Laplace’s law
46
Q.46. Which of the following is the proper number of electrons in 1 A of current?
  • 6.25 × 10¹⁸
  • 6.25 × 10²¹
  • 6.25 × 10¹⁹
  • 6.25 × 10¹⁵
47
Q.47. Which of the following has the highest value of resistivity?
  • Nichrome
  • Silver
  • Chromium
  • Iron
48
Q.48. Which of the following elements is highly effective for making a permanent magnet?
  • Steel
  • Copper
  • Aluminum(c)
  • Zinc
49
Q.49. If four resistors of 3 Ω, 4 Ω, 5Ω and 6Ω are connected in series, what will be the combined resistance of the four resistors?
  • 18Ω
  • 9Ω
  • 3Ω
  • 10Ω
50
Q.50. When will you find the magnetic field stronger?
  • When field lines are crowded
  • When the lines are together
  • When the field lines are not seen
  • When the poles are together
51
Q.51. Which of the following materials is a conductor of electricity?
  • Silver
  • Glass
  • Mica
  • Ebonite
52
Q.52. Which device is used to either break an electric circuit or to complete it?
  • Switch
  • Insulators
  • Wires
  • Bulb
53
Q.53. Identify the correct statement.
  • Resistance of a wire depends on the length and cross-section of the wire.
  • Resistance of a wire depends on the
    length and density of the wire.
  • Specific resistance is the same for all
    conductors.
  • Specific resistance is dependent on
    the cross-sectional area of the wire.
54
Q.54. A light bulb working on a 18V battery draws a current of 3A. What will be the resistance of the bulb?
  • 6 Ω
  • 2 Ω
  • 4 Ω
  • 3 Ω
55
Q.55. The induced current is the highest when the direction of motion of the coil is:
  • at right angles to the magnetic field
  • not at right angles to the magnetic field
  • at right angles to the electricity
  • at right angles to the electric source
56
Q.56. If Q = net charge, t = time, then which of the following equations is correct?
  • I = Q/t
  • T = Q × I
  • I = Q × t
  • Q = I/t
57
Q.57. Which of the following rules is used to find the direction of the magnetic field associated with a current carrying conductor?
  • Maxwell’s corkscrew rule
  • Left hand rule
  • Fleming’s right-hand rule
  • Fleming’s left-hand rule
58
Q.58. Whose law states that at a junction in an electric circuit, the sum of the currents flowing into the junction is equal to the sum of the currents flowing out of the junction?
  • Gustav Robert Kirchhoff
  • Michael Faraday
  • Georg Simon Ohm
  • Victor Francis Hess
59
Q.59. Wheatstone bridge is an arrangement of _________ resistors used for accurate measurement of resistance.
  • four
  • three
  • six
  • five
60
Q.60. Which of the following statements is correct regarding fuse wire?
  • It has a low melting point and high conductivity
  • It has a low melting point and low
    conductivity.
  • It has a high melting point and low
    conductivity
  • It has a high melting point and high
    conductivity.
61
Q.61. Why do atoms and nonpolar molecules have no dipole moment?
  • Because their electronic charge cloud is symmetrically distributed
  • Because their electronic charge cloud
    is missing
  • Because their electronic charge cloud
    is scattered
  • Because their electronic charge cloud is asymmetrically distributed
62
Q.62. What happens to the magnetic field produced by a given current in the conductor when the distance increases?
  • It decreases
  • It stops
  • It increases
  • It stays the same
63
Q.63. The amount of work done in moving a charge of 4C across two points having a potential difference of 6V is ______ .
  • 24 J
  • 12 J
  • 36 J
  • 48 J
64
Q.64. What is the coil of wire in the electric room heater known as?
  • Element
  • Cell
  • Fuse
  • Switch
65
Q.65. Which of the following laws is applicable to the force of attraction or repulsion between two point charges?
  • Coulomb's Law
  • Kirchhoff's Law
  • Newton's Law of Universal Gravitation
  • Newton's Laws of Motion
66
Q.66. Identify the correct statement in relation to ampere.
  • One ampere is constituted by the flow of one coulomb of charge per second
  • One ampere is constituted by the flow
    of one coulomb of charge per minute
  • One ampere is constituted by the flow of two coulomb of charge per second
  • One ampere is constituted by the flow of half coulomb of charge per second
67
Q.67. When do electrons move for the flow of charges in a conducting metallic wire?
  • Only if there is a difference of electric pressure
  • When there is no difference of electric
    pressure
  • When the charges stop flowing
  • Due to gravity
68
Q.68. In a resistor, what happens to the current when the resistance is doubled?
  • The current gets halved
  • The current gets tripled
  • The current stops
  • The current gets doubled
69
Q.69. In the symbol for the electric cell, the thicker, shorter line represents the:
  • Negative terminal
  • positive terminal
  • ring terminal
  • neutral terminal
70
Q.70. Which of the following statements is correct?
  • The net magnetic flux through any closed surface is zero
  • Magnetic flux is a vector quantity.
  • Two magnetic field lines may
    intersect.
  • Earth's magnetic poles coincide with
    the geographic poles.
71
Q.71. Which of the following is not a good conductor of electricity?
  • Diamond
  • Graphite
  • Gold
  • Soil
72
Q.72. Who among the following introduced the concept of electric field for the first time?
  • Michael Faraday
  • Blaise Pascal
  • Charles Augustin de Coulomb
  • Joseph Henry
73
Q.73. What is the total charge of an electric dipole?
  • 0
  • −10
  • +1
  • 10
74
Q.74. Electrical conductance through metals is called electronic conductance and it ______.
  • Decreases with increase in temperature
  • increases with increase in
    temperature
  • decreases with decrease in
    temperature
  • does not depend on temperature
75
Q.75. A bus moving on a straight road at a speed of 10 km/h increases its speed to 70 km/h in 2 minutes. Find its average acceleration.
  • 0.5 km/min²
  • 1 km/minute²
  • 2 km/minute²
  • 30 km/minute²
76
Q.76. What is the metric unit of pressure that is equal to 0.986923 atm?
  • Bar
  • Yard
  • Quart
  • Gallon
77
Q.77. By observing the motion of objects on an inclined plane __________ deduced that objects move with a constant speed when no force acts on them.
  • Galileo
  • Archimedes
  • Johannes Kepler
  • Michael Faraday
78
Q.78. The measure of the force that can cause an object to rotate about an axis is called torque.
  • Torque
  • power
  • moment of inertia
  • centripetal
79
Q.79. The forces exerted on a body during a short period are known as impulse.
  • Impulse
  • Pressure
  • Surface tension
  • Tensile stress
80
Q.80. The relation between atm and bar is :
  • 1 atm = 1.013 bar
  • 1 atm = 10⁵ bar
  • 1 atm = 1.013 x10⁵ bar
  • 1 atm = 1 bar
81
Q.81. If the uncertainty in position and momentum are equal, the uncertainty in velocity will be.
  • 1/2m × √( ℎ / л )
  • √ℎ/л
  • ℎ/2л
  • ℎ/2лm
82
Q.82. The law developed in the 1600s to describe that any force applied to a confined fluid is transmitted equally in all directions, regardless of the shape of the container is Pascal's Law.
  • Pascal's Law
  • Magnus's Law
  • Graham's Law
  • Torricelli's Law
83
Q.83. The suitability of post tensioning is good for long spans.
  • Long spans
  • end spans
  • break spans
  • edge spans
84
Q.84. Select the option that is true
regarding the following two statements
labelled Assertion (A) and Reason (R).
(A): An object slips less on a rough
surface than a smooth surface.
(R): When a surface is rough, frictional
force increases
  • Both Assertion (A) and Reason (R)
    are the true and Reason (R) is a
    correct explanation of Assertion (A).
  • Assertion (A) is true and Reason (R)
    is false
  • Both Assertion (A) and Reason (R)
    are the true but Reason (R) is not a
    correct explanation of Assertion (A).
  • Assertion (A) is false and Reason (R)
    is true.
85
Q.85. In the equation ac = v²/R, 'v' represents speed.
  • Speed
  • Distance
  • Surface area
  • Intensity
86
Q.86. Another name for center-seeking force is centripetal force.
  • Centripetal force
  • Van der Waals
  • Centrifugal
  • Gravitational
87
Q.87. Newton's first law of motion is also known as the law of inertia.
  • Law of Inertia
  • Law of magnitude
  • Law of reaction
  • Law of masses
88
Q.88. The type of friction considered as a self-adjusting force is static friction.
  • Static Friction
  • Kinetic Friction
  • Centripetal Friction
  • Rolling Friction
89
Q.89. The force exerted by a charged body on another charged or uncharged body is known as electrostatic force.
  • Electrostatic Force
  • angular force
  • pressure
  • muscular force
90
Q.90. The substances which reduce friction are called lubricants.
  • Lubricants
  • fluids
  • magnets
  • springs
91
Q.91. The correct statement regarding air pressure is that the air always moves from high pressure areas to low pressure areas.
  • The air always moves from high pressure areas to low pressure areas.
  • The air pressure is lowest at sea level
    and increases with height.
  • High pressure is associated with
    cloudy skies and wet weather
  • Low pressure is associated with
    clear and sunny skies.
92
Q.92. If the velocity of the ball is doubled, its new momentum will be 6000 units.
  • 6000 units
  • 3000 units
  • 2000 units
  • 9000 units
93
Q.93. The statement that is NOT an application of the third law of motion is "A fielder pulls his hands gradually with the moving ball while holding a catch."
  • A fielder pulls his hands gradually
  • Colliding with a player while kicking a
    football and feeling hurt.
  • As the sailor jumps in the forward
    direction, the boat moves backward .
  • A forward force on the bullet and
    recoil of the gun.
94
Q.94. The force that is NOT a non-contact force is friction.
  • Friction
  • Gravitational
  • Electrostatic
  • Magnetic
95
Q.95. The correct order of friction is static > sliding > rolling.
  • Static > Sliding > Rolling
  • Static > Rolling > Sliding
  • Rolling > Static > Sliding
  • Sliding > Static > Rolling
96
Q.96. The correct statement about inertia is: Greater the mass, greater the inertia.
  • Greater the mass, greater the inertia
  • Lesser the weight, greater the inertia
  • Lesser the mass, greater the inertia
  • Greater the mass, lesser inertia
97
Q.97. The motion of a freely falling body is an example of uniformly accelerated motion.
  • Freely falling
  • resting
  • Decelerating
  • parabolic
98
Q.98. The motion of an object is uniform if its velocity is constant.
  • Uniform
  • only accelerating
  • only decelerating
  • non-uniform
99
Q.99. _______ time graph shows speed of an object.
  • Distance
  • Velocity
  • Displacement
  • Acceleration
100
Q.100. Which physical theory explains the generation of thrust by rocket engines, jet engines and deflating balloons?
  • Newton’s laws of motion
  • Exclusion principle
  • Faraday’s laws of electromagnetic
    induction
  • Laws of thermodynamics
101
Q.101. Which of the following intermolecular is also called the London force?
  • Dispersion Forces
102
Q.102. Which of the following statements is correct?
  • Only II is correct
103
Q.103. Which law of Newton provides a quantitative definition of force?
  • Second law of motion
104
Q.104. The range of ______ force is of the order of 10−16 m.
  • Weak nuclear
105
Q.105. Acceleration is equal to the rate of change of ______.
  • Velocity
106
Q.106. If two forces act on an object from opposite directions, then the magnitude of the net force acting on it is the ______ of the magnitudes of the two forces.
  • Difference
107
Q.107. With what do you divide thrust in a liquid to obtain the value of pressure?
  • Area
108
Q.108. Which of the following is a characteristic of conservative force?
  • Work done by it is completely recoverable.
109
Q.109. Which of the following is NOT a scalar quantity?
  • Torque
110
Q.110. Among the given options, which one causes an echo?
  • When sound is reflected
111
Q.111. Among the following, in which material the speed of sound is highest?
  • Aluminium
  • Steel
  • Iron
112
Q.112. Which of the following statements is NOT correct regarding sound?
  • Sound can travel through vacuum.
  • In human beings, the vibration of
    vocal cords produce sound.
  • Unpleasant sounds are called noise.
  • Frequency is expressed in hertz.
113
Q.113. Loudness of sound is proportional to the ______ of the amplitude of the vibration producing the sound.
  • Square
  • cube root
  • Cube
  • square root
114
Q.114. What is the study of the production and propagation of sound waves called?
  • Acoustics
  • Optics
  • Astrophysics
  • Photonics
115
Q.115. If an object executes 10 oscillations per second, then its frequency in kilohertz is equal to:
  • 0.01
  • 1
  • 0.1
  • 10
116
Q.116. Vibration of which among the following produces only odd harmonics?
  • An air column in a closed organ pipe
  • A vibrating string fixed at two ends
  • An air column in an open organ pipe
  • A vibrating rod fixed at two ends
117
Q.117. What is the approximate speed of sound in distilled water at 25°C (77°F)?
  • 1498 m/s
  • 1284 m/s
  • 3980 m/s
  • 1598 m/s
118
Q.118. Bats search out prey and fly in dark night by emitting and detecting reflections of which type of Sound waves?
  • Ultrasonic waves
  • Sonic waves
  • Hypersonic waves
  • Subsonic waves
119
Q.119. What is the velocity of sound in air?
  • 343 m/sec
  • 220 m/sec
  • 243 m/sec
  • 110 m/sec
120
Q.120. The sound of thunder is heard much later than the flash of light is visible. What does it represent?
  • The speed of sound is much less than the speed of light.
  • The speed of sound is twice the
    speed of light.
  • The speed of sound is equal to the
    speed of light.
  • The speed of sound is three times the speed of light.
121
Q.121. Identify the INCORRECT statement for the universal law of gravitation.
  • It is the force causing tides due to the stars and earth.
  • It is the force that binds us to earth
  • It is the force that keeps motion of
    planets around the Sun.
  • It is the force that assists motion of
    the moon around earth.
122
Q.122. Identify the correct statement about gravity.
  • The unit of g is the same as that of acceleration.
  • The unit of g is the same as that of
    velocity
  • The unit of g is the same as that of
    mass.
  • The unit of g is the same as that of
    friction.
123
Q.123. Which of the following laws represented by the formula T²∝R³ compares the orbital period and radius of the orbit of a planet with that of other planets?
  • Kepler's Third Law
  • Hubble's Law
  • Coperncus's Law
  • Bragg's Law
124
Q.124. Who among the following is credited with postulating three laws of planetary motion?
  • Johannes Kepler
  • Isaac Newton
  • Galileo Galilei
  • Tycho Brahe
125
Q.125. Who among the following was the first to conclude that in vacuum all objects fall with the same acceleration g and reach the ground at the same time?
  • Galileo Galilei
  • Thomas Alva Edison
  • Albert Einstein
  • Isaac Newton
126
Q.126. Which instrument was used to detect gravitational waves for the very first time?
  • LIGO
  • WIGO
  • TRIGO
  • GIGO
127
Q.127. Match list I and list II.
List I List II

a) Potential energy i) Solar thermal
b) Chemical energy ii) Wind turbine
c) Kinetic energy iii) Hydropower plant
d) Radiation energy iv) Diesel generator
  • (a)-(iii), (b)-(iv), (c)-(ii), (d)-(i)
  • (a)-(ii), (b)-(iv), (c)-(iii), (d)-(i)
  • (a)-(iii), (b)-(ii). (c)-(iv), (d)-(i)
  • (a)-(iii), (b)-(i), (c)-(ii), (d)-(iv)
128
Q.128. What kind of energy is associated with falling coconuts, speeding cars, rolling stones and flying aircraft?
  • Kinetic Energy
  • Potential energy
  • Radiant energy
  • Elastic energy
129
Q.129. What will be the average kinetic energy per molecule in SI units for an ideal gas at a temperature of 25°C?
  • 6.17 × 10-²² J
  • 6.17 × 10-²¹ J
130
Q.130. If 7 N force is applied on a brick and it moves through 5 m, then what will be the work done?
  • 35 J
131
Q.131. When one stone is thrown upwards, what type of energy conversion would occur?
  • Kinetic energy would change to gravitational potential energy
132
Q.132. What type of energy conversion takes place in a battery?
  • Chemical energy into electrical energy
133
Q.133. Which of the statements is NOT correct regarding energy?
  • An object of mass m moving with
    velocity v has a kinetic energy of
    ( mv/2).
  • The energy possessed by a body due
    to its change in position or shape is
    called the potential energy.
  • The gravitational potential energy of
    an object of mass, M raised through a
    height, H from the earth's surface is
    given by MgH.
  • An object in motion possesses what
    is known as the kinetic energy of the
    object.
134
Q.134. The lifting of an object up and down, the parade of an army and the free fall of a heavy object are all examples of which motion?
  • Rectilinear motion
  • Periodic motion
  • Rotational motion
  • Oscillatory motion
135
Q.135. The given equation describes the _______ relation. s = u t +1/2 a 𝑡²
  • Position-time
  • distance-time
  • position-velocity
  • velocity-time
136
Q.136. Identify the correct formula to find the potential difference between two points.
  • V = W/Q
  • Q= 1/W
  • W= Q/V
  • V = Q/W
137
Q.137. Hydroelectric power stations generate electricity by using the force of water that falls into the turbines and spins the shaft. By rotating the shaft of the turbine, the potential energy of water is converted into ________ energy.
  • Kinetic
  • chemical
  • thermal
  • gravitational
138
Q.138. The English physicist James Prescott Joule outlined the basis of the ______.
  • Principle of conservation
  • phenomenon of gravitation
  • theory of vibrating receptacle
  • concept of diffusion of gases
139
Q.139. Kinetic and potential energies of a body are the components of its ______ energy.
  • Mechanical
  • chemical
  • electrical
  • heat
140
Q.140. Which of the following is an example of gravitational potential energy?
  • Water that is behind a dam
  • Moving car
  • Bullet fired from a gun
  • Foot kicking a ball
141
Q.141. The photoelectric effect demonstrates which nature of light?
  • Particle nature
  • Crystalline nature
  • Dual nature
  • Wave nature
142
Q.142. Which pioneer scientist used radio waves to transmit signals over distances of several kilometers in the 1890s?
  • Guglielmo Marconi
  • Michael Faraday
  • Paul Langevin
  • Pierre Weiss
143
Q.143. The objects which repeat its motion after some time is called
  • Periodic motion
  • Circular motion
  • semi-circular motion
  • Rectilinear motion
144
Q.144. Which of the following earthquake waves are surface waves?
  • L waves
  • P waves
  • S Waves
  • M waves
145
Q.145. In which year was the Doppler effect discovered by Austrian scientist Christian Doppler, that describes the change in frequency of any kind of sound or light wave produced by a moving source with respect to an observer?
  • 1842
  • 1846
  • 1844
  • 1840
146
Q.146. What is the correct order of radiations in descending order of frequencies?
  • X-rays > Infrared > Microwaves > Radio waves
  • Infrared > Microwaves > Radio waves
    > X-rays
  • Radio waves > X-rays > Microwaves >
    Infrared
  • Infrared > Microwaves > X-rays >
    Radio waves
147
Q.147. Which type of radiation designates a part of the electromagnetic spectrum with frequencies approximately from 300 GHz to 3 kHz, or equivalent, wavelengths approximately from 1 mm to 100km?
  • Radio waves
  • Micro waves
  • Infrared waves
  • Ultraviolet rays
148
Q.148. The electromagnetic spectrum describes the full range of light that is generally divided into ________ regions of wavelength and in the order of increasing energy and frequency.
  • Seven
  • six
  • eight
  • Five
149
Q.149. Which of the following techniques uses a combination of a large magnet and radio waves to view the organs and structures inside our bodies?
  • Magnetic resonance imaging
  • Computed Tomography
  • Fluoroscopy
  • Positron Emission Tomography
150
Q.150. A simple pendulum consists of a small metallic ball or a piece of stone suspended from a rigid stand by a thread. The metallic ball is called the ______ of the pendulum.
  • Bob
  • knob
  • hinge
  • head
151
Q.151. The ‘to and fro’ or ‘back and forth’ motion of an object is termed as:
  • Vibration
  • convulsion
  • impulse
  • swing
152
Q.152. Which of the following statements is correct?
  • The minimum distance between two points in a wave having the same phase at a particular instant of time is called the wavelength.
  • If the constituents of the medium
    oscillate along the direction of wave
    propagation, we call the wave a
    transverse wave.
  • If the constituents of the medium
    oscillate perpendicular to the
    direction of wave propagation, we call
    the wave a longitudinal wave.
  • Frequency of a wave is the number of
    oscillations of each constituent
    Particle in the vibrating medium per
    minute.
153
Q.153. What is the rate at which a wave moves through the water, and is measured in knots?
  • Wave speed
  • Wave height
  • Wave crest and trough
  • Wave frequency
154
Q.154. ______ are also known as heat waves.
  • Infrared waves
  • X-rays
  • Light waves
  • Gamma rays
155
Q.155. What powers the Earth's internal heat engine?
  • Radioactive energy
  • Solar Energy
  • Volcanoes
  • Tides
156
Q.156. With which of the following types of fuels is the device named ‘tokamak’ associated?
  • Atomic
  • Hydel
  • Tidal
  • Geothermal
157
Q.157. Name the high-frequency radiation produced in nuclear reactions and also emitted by radioactive nuclei that is used in medicine to destroy cancer cells.
  • Gamma rays
  • X-rays
  • Ultraviolet waves
  • Light waves
158
Q.158. Which of the following represents an alpha particle?
  • ⁴²He
  • ²²He
  • ¹¹He
  • ²¹He
159
Q.159. Which device was invented by Carl Friedrich Gauss and Wilhelm Eduard Weber in 1833?
  • Electromagnetic telegraph
  • Transistor
  • Optical maser
  • Particle accelerator
160
Q.160. When did Heinrich Hertz discover the photoelectric effect and observe that shining ultraviolet light on the electrodes caused a change in voltage between them?
  • 1887
  • 1990
  • 1916
  • 1902
161
Q.161. Who among the following established a unit of horsepower that is equal to one horse doing 33,000 foot-pounds of work in one minute?
  • James Watt
  • James Black
  • James Croll
  • James Dwight Dana
162
Q.162. Which physicist's experiment during a lecture in 1820 showed the connection between electricity and magnetism?
  • Hans Christian Oersted
  • John Cockcroft
  • William Gilbert
  • Heinrich Hertz
163
Q.163. Who was famous for publishing a formula in 1827 that shows the mathematical relationship between current, resistance, and voltage?
  • Georg Simon Ohm
  • William Gilbert
  • William Watson
  • Gustav Kirchhoff
164
Q.164. Which physicist is known for discovering that any periodic wave can be represented as an infinite number of weighted sinusoids, i.e., the sum of sine and cosine waves?
  • Jean Baptiste Joseph Fourier
  • Louis de Broglie
  • Joseph-Louis Lagrange
  • Ernest Walton
165
Q.165. In 1830, which American scientist created the world's most powerful electromagnet, the Albany magnet, which could lift up to 750 pounds of metal at a time?
  • Joseph Henry
  • John Cockcroft
  • William Gilbert
  • Edward Purcell
166
Q.166. In 1851, who discovered the phenomenon of Eddy currents which flow in closed loops within conductors in planes perpendicular to the magnetic field?
  • Leon Foucault
  • David Hughes
  • Charles Townes
  • Nicola Tesla
167
Q.167. Who was awarded the Nobel Prize in Physics in 1909 along with Karl Ferdinand Braun for the development of Practical wireless telegraphy?
  • Guglielmo Marconi
  • Heinrich Rudolf Hertz
  • John Michell
  • Wilhelm Rontgen
168
Q.168. Which experiment was designed to trace the motion of the earth through the 'luminiferous aether", a theoretical substance necessary for the transmission of light?
  • Michelson and Morley experiment
  • Maxwell and Hertz experiment
  • Faraday and Henry experiment
  • Marconi and Thomson experiment
169
Q.169. In which year did an English Scientist named Michael Faraday discover benzene in the illuminating gas?
  • 1825
  • 1827
  • 1820
  • 1822
170
Q.170. As per physicists and their major contributions/discoveries, which of the following pairs is INCORRECT?
  • Paul Dirac – Liquid helium
  • John Bardeen – Theory of
    superconductivity
  • Louis Victor de Broglie – Wave nature of matter
  • Victor Francis Hess – Cosmic
    radiation
171
Q.171. In the early nineteenth century, who demonstrated that there are fourteen space lattices, or regularly repeating arrangements of points in space, that differ in symmetry and geometry?
  • Auguste Bravais
  • William Bragg
  • Jerome Karle
  • Charles Frank
172
Q.172. Hideki Yukawa, who received the Nobel Prize in 1949, is well known for which discovery?
  • Theory of nuclear forces
  • Thermal ionization
  • Cascade process of cosmic radiation
  • Measurement of electronic charge
173
Q.173. Which scientist suggested that the magnet must also exert an equal and opposite force on the current-carrying conductor?
  • Andre Marie Ampere
  • Michael Faraday
  • Joseph Henry
  • William Gilbert
174
Q.174. Who found an empirical relationship between the half-life of alpha decay and the energy of the emitted alpha particles in 1911?
  • Geiger and Nuttall
  • Fermi and Meitner
  • Chadwick and Lawrence
  • Soddy and Aston
175
Q.175. Evangelista Torricelli is famous for what discovery?
  • Invention of mercury barometer
  • Invention of spring balance
  • Invention of piezometer
  • Invention of vacuum gauge
176
Q.176. In 1664, who discovered the fifth star in the Trapezium, an asterism (mini-constellation) in the constellation Orion?
  • Robert Hooke
  • George Willis Ritchey
  • Giordano Bruno
  • Johannes Kepler
177
Q.177. In 1785, who used the calibrated torsion balance to measure the force between electric charges?
  • Charles Augustin Coulomb
  • RA Millikan
  • Hans Christian Oersted
  • John Michell
178
Q.178. Who received the Nobel Prize in 1906, for recognition of the great merits of his theoretical and experimental investigations on the conduction of electricity by gases?
  • Sir J J Thomson
  • Andre-Marie Ampere
  • Albert Einstein
  • Alessandro Volta
179
Q.179. Philosophiae Naturalis Principia Mathematica, popularly known as Principia, published in 1687, is the great work of which scientist?
  • Isaac Newton
  • Johannes Kepler
  • John Philoponus
  • Edmund Halley
180
Q.180. Who was famous for the invention of the vacuum pump in the 17th century and also pioneered the concept of the absolute vacuum of space, measured the weight of air and used air pressure to predict the weather?
  • Otto von Guericke
  • John Cockcroft
  • Enrico Fermi
  • Valerianus Magnus
181
Q.181. In 1928, who discovered that when a ray of coloured light enters a liquid, a fraction of the light scattered by that liquid is of a different color?
  • C V Raman
  • Lord Rayleigh
  • SN Bose
  • John Tyndall
182
Q.182. Who invented the capillary feed fountainpen?
  • L.E. Waterman
  • David Hughes
  • Ian Donald
  • Alfred Nobel
183
Q.183. What do you call the effect of splitting of a spectral line into several components in the presence of a static magnetic field?
  • Zeeman effect
  • Bezold effect
  • Domino effect
  • Askaryan effect
184
Q.184. The discovery and understanding of electromagnetic induction is based on a long series of experiments carried out by ______.
  • Faraday and Henry
  • Einstein
  • Rutherford
  • Planck and Fermi
185
Q.185. What did Wilhelm Conrad Roentgen discover?
  • X-Rays
  • Thermodynamics
  • Electric bulb
  • Conservation of electric charge
186
Q.186. Which scientist won the Nobel prize in Physics in 1918 for the discovery of ‘Energy Quanta’?
  • Max Karl Ernst Ludwig Planck
  • Louis de Broglie
  • Werner Heisenberg
  • James Chadwick
187
Q.187. Superconductivity was discovered by ______, who was also awarded the Nobel Prize for Physics in 1911.
  • Heike Kamerlingh Onnes
  • Robert Bunsen
  • Johannes Diderik van der Waals
  • Gustav Kirchhoff
188
Q.188. Who among the following scientists invented the Cotton Gin?
  • Eli Whitney
  • George Washington Carver
  • Sonny Perdue
  • Eli Whitney
189
Q.189. Who among the following scientists invented Kevlar?
  • Stephanie Louise Kwolek
  • Marry Anderson
  • Steve Wozniak
  • George Eastman
190
Q.190. Which of the following is the correct statement?
  • Joule is the unit of work
  • The unit of power is joule/newton.
  • The unit of energy is the watt.
  • Joule/ second is also a unit of energy.
191
Q.191. Which of the following is an INCORRECT match?
  • Volume - Meter
  • Force - Newton
  • Pressure - Pascal
  • Work done - Joule
192
Q.192. 1 kilowatt is equivalent to:
  • 3600 KJ/h
  • 7200 KJ/h
  • 7200 Joule
  • 3600 calorie
193
Q.193. Which is the Gaussian unit of kinematic viscosity?
  • Stokes
  • Ampere
  • Joule
  • Darcy
194
Q.194. The Units of Linear momentum are measured in __________.
  • kg m/s
  • kg² m/s
  • kg m/s²
  • k²g m/s
195
Q.195. Among the following pairs, which ones denote two scalar quantities?
  • Distance and Speed
  • Momentum and Angular velocity
  • Linear momentum and Acceleration
  • Electric field and Force
196
Q.196. Identify the vector quantity among these listed physical quantities?
  • Gravitational Intensity
  • Energy
  • Mass
  • Density
197
Q.197. The number of significant figures in 0.05800 are:
  • Four
  • two
  • six
  • five
198
Q.198. The dimensions of force are:
  • [MLT-²]
  • [M0 L 3 T
    0
    ]
199
Q.199. Seismograph is used to measure:
  • Earthquakes
200
Q.200. A non-SI unit called ‘nit’ is the unit of which of the following photometric quantities used to measure a multitude of light intensity?
  • Luminance
201
Q.201. What is an instrument that sends pulses of electromagnetic energy into the atmosphere to detect rainfall, determine its speed and intensity, and identify precipitation types such as rain, snow or hail?
  • Doppler weather radar
202
Q.202. Which physical unit is defined as the field intensity that produces one newton (N) of force per ampere (A) per meter of the conductor?
  • Tesla
203
Q.203. Name the instrument that is used by meteorologists to measure the solar radiation from the region of the hemisphere of incidence on a flat surface?
  • Pyranometer
204
Q.204. Match the points under List I with
those under List II.
(Instrument) (Use)

1. Sextant. a. Measures the angle between two visible objects
2. Udometer. b. Measures small quantities of radiant heat
3. Thermopile. c. Measures the temperature of a surface
4. Pyrometer. d. Measures the amount of rainfall
  • 1-a, 2-d, 3-b, 4-c
  • 1-b, 2-d, 3-c, 4-a
  • 1-c, 2-d, 3-b, 4-a
  • 1-c, 2-b, 3-d, 4-a
205
Q.205. The unit of magnetic intensity in the CGS (centimetre-gram-second) system is _______.
  • Oersted
206
Q.206. The Wind Vane instrument measures the _______.
  • wind-direction
207
Q.207. Which among the following is a unit of measurement that describes the rate at which the universe is expanding?
  • Hubble constant
208
Q.208. Match the columns.
Column-A Column-B

i. Electric current. a. Henry
ii. Potential difference. b. Farad
iii. Capacitance. c. Volt
iv. Inductance. d. Ampere
  • i - d , ii - c , iii - b , iv - a
  • i - a , ii - b , iii - c , iv - d
  • i - b , ii - a , iii - c , iv - d
  • i - a , ii - c , iii - b , iv - d
209
Q.209. What is the numerical value of a physical quantity?
  • Magnitude
210
Q.210. What is the commercial unit of electric energy?
  • Kilowatt hour
211
Q.211. Which of the following is a unit of distance?
  • Light-year
212
Q.212. Which measuring instrument consists of a metal triangular frame supported on three legs, used to measure the radius of curvature of an object such as lenses and curved mirrors which are spherical in shape?
  • Spherometer
213
Q.213. What is the defined value of kB in the given equation? KB = PV/TN
  • 1.38 x 10^-23 J K^-1
  • 1.68 10-²³ J K-¹
  • 1.08 x 10-²³ J K-¹
  • 0.38 x 10-²³ JK-¹
214
Q.214. How is the voltmeter connected across the points between which the potential difference is to be measured?
  • In parallel
  • Along the same magnetic field
  • In concentric circles
  • Perpendicular to each other
215
Q.215. Which of the following is the physical quantity for the expression arcadius?
  • Plane angle
  • Surface tension
  • Velocity
  • Linear momentum
216
Q.216. Of the units mentioned in the options, which one is the largest as compared to the others?
  • Tera
  • Hecto
  • Deca
  • Giga
217
Q.217. What is the unit to measure the wavelength of light?
  • Angstrom
  • Faraday
  • Candela
  • Dyne
218
Q.218. Which of the following has the same dimension as that of linear momentum?
  • Impulse
  • Stress
  • Work
  • Energy
219
Q.219. Electron-volt is a unit of ______.
  • Energy
  • current
  • power
  • potential difference
220
Q.220. "Svedberg Unit” is a unit of _______?
  • Time
  • Concentration
  • Size
  • Density
221
Q.221. Weber per second is equivalent to ______ .
  • Volt
  • coulomb
  • ohm
  • ampere
222
Q.222. In terms of SI prefixes 10−15 is called:
  • Femto
  • Yocto
  • Zepto
  • Atto
223
Q.223. The difference in temperature between two bodies is 30 degree centigrade. What is the difference in degree Fahrenheit?
  • 54
  • 72
  • 64
  • 86
224
Q.224. ‘mho’ is the unit of ______ of a substance.
  • Conductance
  • resistivity
  • resistance
  • conductivity
225
Q.225. One calorie of heat energy is equivalent to approximately ______ joules of mechanical Energy.
  • 4.2
  • 0.48
  • 0.24
  • 2.4
226
Q.226. 30˚Celsius = ______ Kelvin (approximately).
  • 303
  • –243
  • 130
  • –30
227
Q.227. An electric generator and an electric motor work in the principle of:
  • Fleming's right and left-hand rule, respectively
  • Fleming's right-hand rule
  • Fleming's left and right-hand rule,
    respectively
  • Fleming's left-hand rule
228
Q.228. Which of the following is the correct formula for the moment of inertia?
  • I = mr²
  • I = m/ r²
  • I = 2mr
229
Q.229. In 1928, which equation was derived and combines quantum theory and special relativity to describe the behavior of an electron moving at a relativistic speed?
  • Dirac equation
230
Q.230. Ball and spring model of chemical bonds obey:
  • Hooke's law
231
Q.231. What is the name of the thermionic electron tube used to oscillate and amplify microwave frequency signals?
  • Klystron
232
Q.232. Which of the following is the right relationship between geometric length (Lg) and magnetic length (Lm)?
  • Lm = Lg * 5/6
233
Q.233. The radius of curvature of a charged particle's passage in a homogeneous magnetic field is proportional to:
  • Momentum of the particle
  • energy of particle
  • charge of particle
  • strength of the field
234
Q.234. Which of the following claims concerning the magnetic lines of force inside a bar magnet is true?
  • From S-pole to N-pole of the magnet
  • Do not exist
  • Depends on the cross-sectional area
    of the bar magnet
  • From N-pole to S-pole of the magnet
235
Q.235. Which equation was verified by American scientists Nichols and Hull in 1903 by measuring the radiation pressure of visible light?
  • P=U/C
  • Pr=C/N
  • P=L/M
  • P=F/A
236
Q.236. Identify an application in which solar cells are not used.
  • Lift system
  • Radio
  • Space probes
  • Artificial satellites
237
Q.237. Air _____ on heating and ________ on cooling.
  • Expands, contracts
  • contracts, stabilizes
  • expands, expands
  • contracts, expands
238
Q.238. In which year did Albert Einstein predict a new state of matter, the Bose-Einstein condensate (BEC), based on a quantum formulation by the Indian physicist Satyendra Nath Bose?
  • 1924
  • 1935
  • 1930
  • 1919
239
Q.239. According to the Nebular hypothesis, how does a galaxy form?
  • By the accumulation of hydrogen gas in the form of a very large cloud called nebula
  • By a fission reaction of hydrogen gas
  • By the accumulation of oxygen gas
  • By the accumulation of oxygen
    gas in the form of a very large
    cloud called nebula
240
Q.240. What is the starting voltage of an AA battery used for home gadgets such as remote controls, small toys, and wireless kitchen appliances?
  • 1.5 V
  • 2.0 V
  • 3.0 V
  • 2.5 V
241
Q.241. ‘(gnomon)’ is a part of the _______.
  • Solar Clock
  • Bolometer
  • Telescope
  • Transformer
242
Q.242. Decrease in which of the following factors leads to an increase in the rate of evaporation?
  • Humidity
  • Ambient temperature
  • Area of the free surface of the liquid
    concerned
  • Wind speed above the surface of the
    liquid
243
Q.243. ______ is used to measure the pressure inside the eyes of a person.
  • Tonometer
  • Machmeter
  • Odometer
  • Viscometer
244
Q.244. Which everyday morning ritual is part of quantum mechanics?
  • Ringing of the alarm clock
  • Brushing teeth
  • Making tea
  • Reading newspaper
245
Q.245. Which of the following cells is NOT used in watches?
  • Lead-acid cell
  • Silver oxide cell
  • Mercury cell
  • Zinc air cell
246
Q.246. In the Millikan’s Oil Drop experiment, the oil drop is subjected to such forces whose nature does NOT fall under the category of:
  • Magnetostatic
  • electrostatic
  • viscous
  • gravitational
247
Q.247. A set of equations involving electric and magnetic fields, and their sources, the charge and current densities are known as ______ equations.
  • Maxwell's
  • Einstein’s
  • Newton’s
  • Bhor’s
248
Q.248. Which of the following elements occurs most abundantly in our universe?
  • Hydrogen
  • Oxygen
  • Nitrogen
  • Silicon
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