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- 1. Multiple Choice
What letter is used to represent refractive index?
c
n
v
θ
- 2. Multiple Choice
What letter is used to represent the speed of light?
c
n
v
θ
- 3. Multiple Choice
What is a line drawn at 90° to a surface called?
incident ray
normal line
refracted ray
tangent
- 4. Multiple Choice
What causes refraction?
A change in frequency of a wave.
A change in amplitude of a wave
A change in speed of a wave.
A change in phase of a wave.
- 5. Multiple Choice
What direction does the ray bend when entering a more optically dense material, where the wave travels more slowly?
Towards the normal.
Away from the normal.
No change.
Answer is not listed above.
- 6. Multiple Choice
A beam of light strikes a glass block with refractive index of 1.52, at an angle of 5°, what is the angle of refraction?
7.51
0.087
0.13
3.29
- 7. Multiple Choice
What is the angle of incidence on a glass block with refractive index 1.52 if the angle of refraction is 32°?
52.6
20.7
32.0
74.3
- 8. Multiple Choice
What is the refractive index of air?
1.5
1.2
0.5
1.0
- 9. Multiple Choice
Which is the correct equation for refractive index?
n = v /c
n = v × c
n = c / v
n = c v
- 10. Multiple Choice
Which of the following is true about a wave that has been refracted?
The speed and frequency changes, but the wavelength stays the same.
The speed and wavelength changes, but the frequency stays the same.
The wavelength and frequency changes, but the speed stays the same.
The speed and frequency changes, but the amplitude stays the same.
- 11. Multiple ChoiceSwimming pools and the ocean look shallower than they really are due to:reflectiondispersionrefractiontotal internal reflection
- 12. Multiple Choice
What is the speed of light in water of refractive index 1.33?
3.0×108m/s
2.0×108m/s
2.3×108m/s
3.9×108m/s
- 13. Multiple Choice
Which of the following is true?
When light travels from a vacuum into glass it speeds up.
When light travels from a vacuum into glass it bends away from the normal.
When light travels from a vacuum into glass the frequency decreases.
When light travels from a vacuum into glass the wavelength decreases.
- 14. Multiple Choice
Which of the following is a correct representation of snell's law?
n1sinθ2=n2sinθ1
n1sinθ1=n2sinθ2
n2sinθ1=n1sinθ2
n1/sinθ1=n2/sinθ2
- 15. Multiple ChoiceIn what medium does light travel the fastest?vacuumairwaterglass
- 16. Multiple ChoiceWhen light passes at an angle to the normal from one material into another material in which its speed is lowerit is bent towards the normal.it always lies along the normal.it is unaffected.it is bent away from the normal.
- 17. Multiple ChoiceIf the angle of incidence of light traveling through air, and then striking water is 30 degrees what is the angle of refraction? (n=1 air, n=1.33 water)15 degrees22 degrees43 degrees17 degrees
- 18. Multiple ChoiceLight has the lowest velocity in which medium?
flint glass n=1.70
barium glass n=1.60
crown glass n=1.523
water n=1.33
diamond n=2.45diamondwaterflint glassbarium glass - 19. Multiple Choice
Based on the image, which medium has a larger index of refraction?
Medium 1 has a larger index of refraction.
Medium 2 has a larger index of refraction.
Both mediums have the same index of refraction.
Cannot be determined.
- 20. Multiple Choice
Based on the image, as light passes from medium 1 to medium 2
light speeds up and bends towards the normal
light speeds up and bends away from the normal
light slows down and bends towards the normal
light slows down and bends away from the normal
- Answer choicesTagsAnswer choicesTags