Light - Deviation - Index of Refraction - Snell's Law

Question 1

A group of rays emitted from a single small point on a light source, it requires a larger hole in the second screen:

a. Beam
b. Pencil
c. Photon
d. Ray

Answer 1

Pencil

Question 2

We use the acronym ROY G BIV to help remember the order of colors. It lists colors from:

a. Long wavelength (around 700nm) to short wavelength (around 400nm)
b. Short wavelength (around 400nm) to long wavelength (Around 700nm)

Answer 2

Long wavelength (around 700nm) to short wavelength (around 400nm)

Question 3

Which wave length of ultra-violet radiation is absorbed by the ozone layer?

a. UV-A
b. UV-B
c. UV-C

Answer 3

UV-C

Question 4

The bending or redirection of a light wave when it passes a barrier without changing the medium in which it is traveling is called:

a. Dispersion
b. Diffraction
c. Reflection
d. Refraction

Answer 4

Diffraction

Question 5

When a light ray travels from one transparent medium to another, it changes direction. This bending of light, which results from the differences in density of different transparent materials, is called:

a. Dispersion
b. Diffraction
c. Refraction
d. Reflection

Answer 5

Refraction

Question 6

When a ray of light travels from one material to another, if its direction of travel is perpendicular or normal to the interface or junction between the materials, it will _____.

a. bend away from the normal
b. change speed but not direction
c. bend toward the normal

Answer 6

change speed but not direction

Question 7

When a ray of light travels from a less dense (faster) material to a more dense (slower) material at an angle to the normal, it will ____.

a. bend away from the normal
b. change speed but not direction
c. bend toward the normal

Answer 7

bend toward the normal

Question 8

When a ray of light travels from a more dense (slower) material to a less dense (faster) material at an angle to the normal, it will _____.

a. bend away from the normal
b. change speed but not direction
c. bend toward the normal

Answer 8

bend away from the normal

Question 9

When a ray of light leaves the crown glass, its angle with the normal to the surface is only 8 degrees. If it has an angle of refraction of 12 degrees, what is the angle of deviation when it leaves the glass?

a. 4 degrees
b. -4 degrees

Answer 9

-4 degrees

Question 10

If a ray of light is incident on a material at an angle of 18 degrees, and it is deviated by 7 degrees, what is its angle of refraction?

a. 7 degrees
b. 11 degrees
c. 18 degrees
d. 25 degrees

Answer 10

11 degrees

Question 11

When a ray of light travels from a more dense medium to a less dense medium, r is greater than i and d is negative.

a. False
b. True

Answer 11

False

Question 12

When a ray of light travels from a less dense medium to a more dense medium, r is less than i and d is positive.

a. False
b. True

Answer 12

True

Question 13

A ray of light travels from one material to another. The angle of incidence is 45 degrees and the angle of refraction is 65 degrees. What is the angle of deviation?

a. -20 degrees
b. 20 degrees

Answer 13

-20 degrees

Question 14

A ray light is deviated by -10 degrees from its path when it passes from one material into another material. If it was originally traveling at an angle of 29 degrees to the normal, it is _______.

a. traveling into the denser material
b. exiting the denser material

Answer 14

exiting the denser material

Question 15

A ray of light traveling from air into crown glass (1.523) strikes the surface at an angle of 30 degrees. What will the angle of refraction be?

a. 15 degrees
b. 19 degrees
c. 25 degrees
d. 41 degrees

Answer 15

19 degrees

Question 16

If light travels through a liquid at 140,000 miles per second, what is the index of the liquid?

a. 1.32
b. 1.46
c. 2.15
d. 2.34

Answer 16

1.32

Question 17

If light traveling through air encounters a second medium which slows the light to 100,000 miles per second, what is the index of he second medium?

a. 1.10
b. 1.66
c. 1.86
d. 2.10

Answer 17

1.86

Question 18

What is the index of refraction of a refractive medium if the angle of incidence in air is 30 degrees and the angle of refraction is 15 degrees?

a. 1.00
b. 1.50
c. 2.00
d. 2.25

Answer 18

2.00

Question 19

What is the angle of refraction in water if the angle of incidence in air is 40 degrees?

a. 20 degrees
b. 29 degrees
c. 45 degrees
d. 60 degrees

Answer 19

29 degrees

Question 20

What is the index of refraction of a liquid if the angle of incidence in air is 35 degrees and the angle of refraction is 14 degrees?

a. 1.33
b. 1.42
c. 2.00
d. 2.37

Answer 20

2.37

Question 21

A ray of light exits from a material with an index of 1.80, traveling into air. If the angle of refraction is 20 degrees, what was the original angle of incidence?

a. 11 degrees
b. 20 degrees
c. 29 degrees
d. 38 degrees

Answer 21

11 degrees

Question 22

A ray of light exits from a material with index of 1.00, traveling into water (1.33). If the angle of refraction is 20 degrees, what was the original angle of incidence?

a. 20 degrees
b. 27 degrees
c. 39 degrees
d. 45 degrees

Answer 22

27 degrees

Question 23

Which formula is used for calculating angle of deviation?

a. N1 sin i = N2 sin r
b. angle i = angle r
c. i = r +d
d. Speed of light in air/speed of light in medium

Answer 23

i = r +d

Question 24

Which formula is used for calculating index of refraction?

a. N1 sin i+ N2 sin r
b. angle i = angle r
c. i = r +d
d. Speed of light in air/speed of light in medium

Answer 24

Speed of light in air/speed of light in medium

Question 25

Which formula is used for calculating angle of refraction?

a. N1 sin i+ N2 sin r
b. angle i = angle r
c. i = r +d
d. Speed of light in air/speed of light in medium

Answer 25

N1 sin i+ N2 sin r