Physical Optics, MCQs
Choose the best answer to the following:
1. Light is an energy form and is an example of …………..wave
a- Longitudinal
b. Transverse
2. Which radiation type has less energy per photon?
a- Red light
b. Blue light
c.Both have the same energy
3. The photoelectric effect best demonstrates the
a- Wave nature of light.
b. Particle nature of light.
c. Both of these
4. The interference phenomena best demonstrates the
a- Wave nature of light.
b. Particle nature of light.
c. Both of these
5. What type of waves are used to transmit cellular telephone messages?
a- Gamma rays
b. Radio waves
c. Microwaves
d. Visible light
6. The wave theory of light was given by
a. Huygen
b. Young
c. Newton
d. Fresnel
7. All of the waves listed below are a part of the electromagnetic spectrum except
a. sound waves.
b. X rays.
c. gamma rays.
d. radio waves
8. In a transverse wave, ………… is measured from crest to crest.
a. wave speed b.
amplitude
c.
wavelength d.
frequency
9. What is the amplitude of the wave in the figure shown above?
a. 24 m
b. 2.5 m
c. 1.5 m
d. 5 m
10. Using the above figure, if this was the number of waves that passed in 2 seconds, what would the
frequency of these waves be?
a. 4 Hz
b. 2 Hz
c. 24 Hz
d. 8 Hz
11. What is the wavelength of the wave shown in the figure above?
a. 1.5 m
b. 5 m
c. 3 m
d. 24 m
12. If a wave has a wavelength of 0.53 m and a frequency of 5 Hertz, its speed is ….
a. 2.65 Hz
b. 9.43 Hz
c. 2.65m/s
d. 9.43 m/s
13. In longitudinal waves the motion of the vibration is …………………… to the direction of wave
propagation.
a. transverse
b. parallel
c. perpendicular
d.in a circular motion
14. A wave has a velocity of 28.8 m/s and a frequency of 4.8 Hertz. What is its wavelength?
a. 6 mm/s
b.
138.24 mm/s c.
6 m d.
138.24 m
15. Electromagnetic waves consist of
a. compressions and rarefactions. b. vibrating electric and magnetic fields.
c. particles of light energy.
d. high-frequency gravitational waves
16. The speed of a wave is its wavelength multiplied by its
a. amplitude.
b. vibration.
c. frequency. d. reflection.
17. Energy stored in electromagnetic oscillations is in the form of…….
a. electrical energy b. magnetic energy c. both (a) and (b) d. none of these
18. An electromagnetic wave going through vacuum is described by
E=E0sin(kx−ωt) ; B=B0sin(kx−ωt). Which of the following equation is true
a. E0k=B0ω
b. E0ω=B0k
c. E0B0=ωk
d. none of these