Refraction of Light MCQ Questions and Answers for Practice

1. Refraction is caused by

1. different wave speeds
2. more than one reflection
3. displaced images
4. bending

2. Refraction occurs

1. when a wave changes speed
2. only at a wave front
3. at any unpredictable time
4. only with light waves

3. You can hear noises a long distance away over water at night because

1. of lowered temperature
2. water conducts sound better at night
3. sound is reflected off water more efficiently at night
4. of refraction of sound in air

4. When you see a wet spot mirage on the road in front of you, you are most likely seeing

1. water
2. hot air
3. a figment of your imagination
4. sky

5. The effect that we call a mirage has most to do with

1. reflection
2. refraction
3. diffraction
4. interference

6. Different colors of light travel at different speeds in a transparent medium. In a vacuum, different colors of light travel at

1. the same speed
2. different speeds
3. both a and b
4. none of the above

7. The spectrum produced by a prism or a raindrop is evidence that the average speed of light in the material depends on the lights

1. transmission qualities
2. color
3. wave nature
4. particle nature

8. A beam of light travels fastest in

1. air
2. water
3. plastic
4. glass

9. Which of the following is a consequence of the refraction of light?

1. rainbows
2. mirages
3. internal reflection
4. all of the above

10. When plane waves pass through an opening, the wave fronts will not change much if the opening is

1. the same size as the wavelength
2. wide compared to the wavelength
3. narrow compared to the wavelength
4. none of the above

11. When a wave passes through an opening, some of the wave is bent. This phenomenon is called

1. polarization
2. reflection
3. diffraction
4. refraction

12. When a light beam emerges from water into air, the average light speed

1. remains the same
2. decreases
3. increases
4. none of the above