1What is the constant speed of light in a vacuum (c) ;; 3 × 10⁸ m/s
2Convert 1 Hz into cycles per second ;; 1 cycle per second
3What is 1 MHz in Hz ;; 10⁶ Hz
4What is 1 GHz in Hz ;; 10⁹ Hz
5What is 1 nm in meters ;; 10⁻⁹ m
6What is 1 μm in meters ;; 10⁻⁶ m
7What is the wavelength of a 100 MHz radio signal ;; 3 m
8What is the frequency of red light with λ = 700 nm ;; ≈ 4.29 × 10¹⁴ Hz
9What is the wavelength range of visible light ;; ≈ 400–700 nm
10Which color has the shortest wavelength and highest frequency in visible light ;; Violet (≈ 400 nm)
11Which color has the longest wavelength and lowest frequency in visible light ;; Red (≈ 700 nm)
12Frequency range of ELF (Extremely Low Frequency) ;; 3–30 Hz
13Frequency range of SLF (Super Low Frequency) ;; 30–300 Hz
14Frequency range of ULF (Ultra Low Frequency) ;; 300 Hz–3 kHz
15Frequency range of VLF (Very Low Frequency) ;; 3–30 kHz
16Frequency range of LF (Low Frequency) ;; 30–300 kHz
17Frequency range of MF (Medium Frequency) ;; 300 kHz–3 MHz
18Frequency range of HF (High Frequency) ;; 3–30 MHz
19Frequency range of VHF (Very High Frequency) ;; 30–300 MHz
20Frequency range of UHF (Ultra High Frequency) ;; 300 MHz–3 GHz
21Frequency range of SHF (Super High Frequency) ;; 3–30 GHz
22Frequency range of EHF (Extremely High Frequency) ;; 30–300 GHz
23Frequency range of THF (Tremendously High Frequency) ;; 300 GHz–3 THz