Physics

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:

Q.2. In optics, which term refers to the opening of the diaphragm of a lens that spatially limits the propagation of light?

Q.3. White light is an example of:

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?

Q.5. The minimum distance of distinct vision for a young adult person with no defect in eyes is:

Q.6. Which colour of light from VIBGYOR has minimum energy?

Q.7. Why can you not see objects in a dim lit room when you come from a brightly lit room?

Q.8. What will be the focal length of a convex lens with the power of a +2.5 Diopter?

Q.9. Raman wants to use a rear-view mirror in his vehicle. Which type of mirror should he pick for it?

Q.10. An image formed by the convex mirror is always _________.

Q.11. Which of the following statements regarding the lenses is/are correct?

Q.12. Which of the following pair of position of object – position of image – size of image, is NOT correct for concave mirror?

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?

Q.14. The splitting of white light into its component colours is called ______.

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?

Q.16. Which of the following elements is NOT suitable for the fabrication of a light emitting diode structure?

Q.17. Gold and copper happen to absorb ______ and violet light, leaving yellow light.

Q.18. The absolute refractive index of ______ is 2.42.

Q.19. Apart from the red and green wavelengths of sunlight, which other wavelength of sunlight is absorbed by water molecules in the ocean?

Q.20. Which of the following types of mirrors show a lateral inversion of light?

Q.21. The color of the clear sky is blue due to the phenomenon of:

Q.22. What is the full form of LED?

Q.23. Which phenomenon deals with the scattering of light by molecules of a medium when they are excited to vibrational energy levels?

Q.24. The phenomenon of deviation of light rays from their original path, when they pass from one medium to another, is called ____.

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?

Q.26. The total number of images formed by two mirrors inclined at 120° to each other is ______.

Q.27. Which of the following best describes the process of calorimetry?

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?

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?

Q.30. Triple point can be defined as:

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.

Q.32. Tensile or compressive stress can also be termed as _______.

Q.33. In which of the following ways of heat transfer no medium is required?

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.

Q.35. What is the Steam Point on the Fahrenheit scale?

Q.36. Heat, in ______, is a type of energy transfer from a warmer substance to a colder one.

Q.37. _______ expansion makes the Eiffel Tower taller during summers.

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?

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?

Q.40. _______ forces water through a semipermeable membrane and removes contaminants.

Q.41. What is the relative density of silver?

Q.42. The neutral point in the magnetic field of a horizontally positioned bar magnet is the:

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?

Q.44. Which of the following options is correct for Coulomb's law?

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”?

Q.46. Which of the following is the proper number of electrons in 1 A of current?

Q.47. Which of the following has the highest value of resistivity?

Q.48. Which of the following elements is highly effective for making a permanent magnet?

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?

Q.50. When will you find the magnetic field stronger?

Q.51. Which of the following materials is a conductor of electricity?

Q.52. Which device is used to either break an electric circuit or to complete it?

Q.53. Identify the correct statement.

Q.54. A light bulb working on a 18V battery draws a current of 3A. What will be the resistance of the bulb?

Q.55. The induced current is the highest when the direction of motion of the coil is:

Q.56. If Q = net charge, t = time, then which of the following equations is correct?

Q.57. Which of the following rules is used to find the direction of the magnetic field associated with a current carrying conductor?

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?

Q.59. Wheatstone bridge is an arrangement of _________ resistors used for accurate measurement of resistance.

Q.60. Which of the following statements is correct regarding fuse wire?

Q.61. Why do atoms and nonpolar molecules have no dipole moment?

Q.62. What happens to the magnetic field produced by a given current in the conductor when the distance increases?

Q.63. The amount of work done in moving a charge of 4C across two points having a potential difference of 6V is ______ .

Q.64. What is the coil of wire in the electric room heater known as?

Q.65. Which of the following laws is applicable to the force of attraction or repulsion between two point charges?

Q.66. Identify the correct statement in relation to ampere.

Q.67. When do electrons move for the flow of charges in a conducting metallic wire?

Q.68. In a resistor, what happens to the current when the resistance is doubled?

Q.69. In the symbol for the electric cell, the thicker, shorter line represents the:

Q.70. Which of the following statements is correct?

Q.71. Which of the following is not a good conductor of electricity?

Q.72. Who among the following introduced the concept of electric field for the first time?

Q.73. What is the total charge of an electric dipole?

Q.74. Electrical conductance through metals is called electronic conductance and it ______.

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.

Q.76. What is the metric unit of pressure that is equal to 0.986923 atm?

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.

Q.78. The measure of the force that can cause an object to rotate about an axis is called torque.

Q.79. The forces exerted on a body during a short period are known as impulse.

Q.80. The relation between atm and bar is 1 atm = 1.013 bar.

Q.81. If the uncertainty in position and momentum are equal, the uncertainty in velocity will be.

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.

Q.83. The suitability of post tensioning is good for long spans.

Q.84. Both Assertion (A) and Reason (R) are true and Reason (R) is a correct explanation of Assertion (A).

Q.85. In the equation ac = v²/R, 'v' represents speed.

Q.86. Another name for center-seeking force is centripetal force.

Q.87. Newton's first law of motion is also known as the law of inertia.

Q.88. The type of friction considered as a self-adjusting force is static friction.

Q.89. The force exerted by a charged body on another charged or uncharged body is known as electrostatic force.

Q.90. The substances which reduce friction are called lubricants.

Q.91. The correct statement regarding air pressure is that the air always moves from high pressure areas to low pressure areas.

Q.92. If the velocity of the ball is doubled, its new momentum will be 6000 units.

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."

Q.94. The force that is NOT a non-contact force is friction.

Q.95. The correct order of friction is static > sliding > rolling.

Q.96. The correct statement about inertia is: Greater the mass, greater the inertia.

Q.97. The motion of a freely falling body is an example of uniformly accelerated motion.

Q.98. The motion of an object is uniform if its velocity is constant.

Q.99. _______ time graph shows speed of an object.

Q.100. Which physical theory explains the generation of thrust by rocket engines, jet engines and deflating balloons?

Q.101. Which of the following intermolecular is also called the London force?

Q.102. Which of the following statements is correct?

Q.103. Which law of Newton provides a quantitative definition of force?

Q.104. The range of ______ force is of the order of 10−16 m.

Q.105. Acceleration is equal to the rate of change of ______.

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.

Q.107. With what do you divide thrust in a liquid to obtain the value of pressure?

Q.108. Which of the following is a characteristic of conservative force?

Q.109. Which of the following is NOT a scalar quantity?

Q.110. Among the given options, which one causes an echo?

Q.111. Among the following, in which material the speed of sound is highest?

Q.112. Which of the following statements is NOT correct regarding sound?

Q.113. Loudness of sound is proportional to the ______ of the amplitude of the vibration producing the sound.

Q.114. What is the study of the production and propagation of sound waves called?

Q.115. If an object executes 10 oscillations per second, then its frequency in kilohertz is equal to:

Q.116. Vibration of which among the following produces only odd harmonics?

Q.117. What is the approximate speed of sound in distilled water at 25°C (77°F)?

Q.118. Bats search out prey and fly in dark night by emitting and detecting reflections of which type of Sound waves?

Q.119. What is the velocity of sound in air?

Q.120. The sound of thunder is heard much later than the flash of light is visible. What does it represent?

Q.121. Identify the INCORRECT statement for the universal law of gravitation.

Q.122. Identify the correct statement about gravity.

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?

Q.124. Who among the following is credited with postulating three laws of planetary motion?

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?

Q.126. Which instrument was used to detect gravitational waves for the very first time?

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

Q.128. What kind of energy is associated with falling coconuts, speeding cars, rolling stones and flying aircraft?

Q.129. What will be the average kinetic energy per molecule in SI units for an ideal gas at a temperature of 25°C?

Q.130. If 7 N force is applied on a brick and it moves through 5 m, then what will be the work done?

Q.131. When one stone is thrown upwards, what type of energy conversion would occur?

Q.132. What type of energy conversion takes place in a battery?

Q.133. Which of the statements is NOT correct regarding energy?

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?

Q.135. The given equation describes the _______ relation. s = u t +1/2 a 𝑡²

Q.136. Identify the correct formula to find the potential difference between two points.

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.

Q.138. The English physicist James Prescott Joule outlined the basis of the ______.

Q.139. Kinetic and potential energies of a body are the components of its ______ energy.

Q.140. Which of the following is an example of gravitational potential energy?

Q.141. The photoelectric effect demonstrates which nature of light?

Q.142. Which pioneer scientist used radio waves to transmit signals over distances of several kilometers in the 1890s?

Q.143. The objects which repeat its motion after some time is called

Q.144. Which of the following earthquake waves are surface waves?

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?

Q.146. What is the correct order of radiations in descending order of frequencies?

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?

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.

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?

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.

Q.151. The ‘to and fro’ or ‘back and forth’ motion of an object is termed as:

Q.152. Which of the following statements is correct?

Q.153. What is the rate at which a wave moves through the water, and is measured in knots?

Q.154. ______ are also known as heat waves.

Q.155. What powers the Earth's internal heat engine?

Q.156. With which of the following types of fuels is the device named ‘tokamak’ associated?

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.

Q.158. Which of the following represents an alpha particle?

Q.159. Which device was invented by Carl Friedrich Gauss and Wilhelm Eduard Weber in 1833?

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?

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?

Q.162. Which physicist's experiment during a lecture in 1820 showed the connection between electricity and magnetism?

Q.163. Who was famous for publishing a formula in 1827 that shows the mathematical relationship between current, resistance, and voltage?

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?

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?

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?

Q.167. Who was awarded the Nobel Prize in Physics in 1909 along with Karl Ferdinand Braun for the development of Practical wireless telegraphy?

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?

Q.169. In which year did an English Scientist named Michael Faraday discover benzene in the illuminating gas?

Q.170. As per physicists and their major contributions/discoveries, which of the following pairs is INCORRECT?

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?

Q.172. Hideki Yukawa, who received the Nobel Prize in 1949, is well known for which discovery?

Q.173. Which scientist suggested that the magnet must also exert an equal and opposite force on the current-carrying conductor?

Q.174. Who found an empirical relationship between the half-life of alpha decay and the energy of the emitted alpha particles in 1911?

Q.175. Evangelista Torricelli is famous for what discovery?

Q.176. In 1664, who discovered the fifth star in the Trapezium, an asterism (mini-constellation) in the constellation Orion?

Q.177. In 1785, who used the calibrated torsion balance to measure the force between electric charges?

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?

Q.179. Philosophiae Naturalis Principia Mathematica, popularly known as Principia, published in 1687, is the great work of which scientist?

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?

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?

Q.182. Who invented the capillary feed fountainpen?

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?

Q.184. The discovery and understanding of electromagnetic induction is based on a long series of experiments carried out by ______.

Q.185. What did Wilhelm Conrad Roentgen discover?

Q.186. Which scientist won the Nobel prize in Physics in 1918 for the discovery of ‘Energy Quanta’?

Q.187. Superconductivity was discovered by ______, who was also awarded the Nobel Prize for Physics in 1911.

Q.188. Who among the following scientists invented the Cotton Gin?

Q.189. Who among the following scientists invented Kevlar?

Q.190. Which of the following is the correct statement?

Q.191. Which of the following is an INCORRECT match?

Q.192. 1 kilowatt is equivalent to:

Q.193. Which is the Gaussian unit of kinematic viscosity?

Q.194. The Units of Linear momentum are measured in __________.

Q.195. Among the following pairs, which ones denote two scalar quantities?

Q.196. Identify the vector quantity among these listed physical quantities?

Q.197. The number of significant figures in 0.05800 are:

Q.198. The dimensions of force are:

Q.199. Seismograph is used to measure:

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?

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?

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?

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?

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

Q.205. The unit of magnetic intensity in the CGS (centimetre-gram-second) system is _______.

Q.206. The Wind Vane instrument measures the _______.

Q.207. Which among the following is a unit of measurement that describes the rate at which the universe is expanding?

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

Q.209. What is the numerical value of a physical quantity?

Q.210. What is the commercial unit of electric energy?

Q.211. Which of the following is a unit of distance?

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?

Q.213. What is the defined value of kB in the given equation? KB = PV/TN

Q.214. How is the voltmeter connected across the points between which the potential difference is to be measured?

Q.215. Which of the following is the physical quantity for the expression arcadius?

Q.216. Of the units mentioned in the options, which one is the largest as compared to the others?

Q.217. What is the unit to measure the wavelength of light?

Q.218. Which of the following has the same dimension as that of linear momentum?

Q.219. Electron-volt is a unit of ______.

Q.220. "Svedberg Unit” is a unit of _______?

Q.221. Weber per second is equivalent to ______ .

Q.222. In terms of SI prefixes 10−15 is called:

Q.223. The difference in temperature between two bodies is 30 degree centigrade. What is the difference in degree Fahrenheit?

Q.224. ‘mho’ is the unit of ______ of a substance.

Q.225. One calorie of heat energy is equivalent to approximately ______ joules of mechanical Energy.

Q.226. 30˚Celsius = ______ Kelvin (approximately).

Q.227. An electric generator and an electric motor work in the principle of:

Q.228. Which of the following is the correct formula for the moment of inertia?

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?

Q.230. Ball and spring model of chemical bonds obey:

Q.231. What is the name of the thermionic electron tube used to oscillate and amplify microwave frequency signals?

Q.232. Which of the following is the right relationship between geometric length (Lg) and magnetic length (Lm)?

Q.233. The radius of curvature of a charged particle's passage in a homogeneous magnetic field is proportional to:

Q.234. Which of the following claims concerning the magnetic lines of force inside a bar magnet is true?

Q.235. Which equation was verified by American scientists Nichols and Hull in 1903 by measuring the radiation pressure of visible light?

Q.236. Identify an application in which solar cells are not used.

Q.237. Air _____ on heating and ________ on cooling.

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?

Q.239. According to the Nebular hypothesis, how does a galaxy form?

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?

Q.241. ‘(gnomon)’ is a part of the _______.

Q.242. Decrease in which of the following factors leads to an increase in the rate of evaporation?

Q.243. ______ is used to measure the pressure inside the eyes of a person.

Q.244. Which everyday morning ritual is part of quantum mechanics?

Q.245. Which of the following cells is NOT used in watches?

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:

Q.247. A set of equations involving electric and magnetic fields, and their sources, the charge and current densities are known as ______ equations.

Q.248. Which of the following elements occurs most abundantly in our universe?