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Snell's Law Practice

Total questions: 25

Worksheet time: 51mins

Name
Class
Date
1.

A ray of light traveling from air into crown glass strikes the surface at an angle of 20 degrees. What is the angle of refraction? (air n=1, crown glass n=1.532)

a)

39.7 degrees

b)

19.2 degrees

c)

59.1 degrees

d)

13.0 degrees

2.
According to the Law of reflection, a light ray striking a mirror
a)
continues moving through the mirror in the same direction
b)
moves into the mirror at a slightly different angle
c)
bounces off the mirror toward the direction it came from
d)
bounces off the mirror at the same angle it hits.
3.
Glass has a _____________ index of refraction than air.
a)
Equal
b)
Greater
c)
Less
d)
Impossible to say
4.
The fact the two angles are the same is an example of....
a)
Refraction
b)
Angle of Incidence
c)
Law of reflection
d)
Magnification
5.
The measure of how much light refracts is called...
a)
Refraction
b)
Law of reflection
c)
reflected ray
d)
Index of refraction
6.
This shows the phenomenon known as....
a)
reflection
b)
refraction
c)
mirrors
d)
focal point
7.

Light travels through a liquid at 2.25x108 m/s. What is the index of the liquid?

a)

1.33

b)

1.0

c)

1.523

d)

2.45

8.

Light traveling through air encounters a second medium which slows the light to 1.88x108 m/s. What is the index of the second medium?

a)

1.00

b)

1.498

c)

2.45

d)

1.60

9.
The velocity of light in vacuum is _______ m/s.
a)
3x108
b)
3x1012
c)
3x106
d)
3x1010
10.

What is the index of refraction of a refractive medium if the angle of incidence in the air is 40 degrees and the angle of refraction is 29 degrees?

a)

1.32

b)

2.06

c)

1.523

d)

1.586

11.

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

a)

1.33

b)

2.21

c)

2.37

d)

1.72

12.

If 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)

a)

15 degrees

b)

22 degrees

c)

43 degrees

d)

17 degrees

13.

Light travels at 1.76 EE 8 m/s through an optical medium. What is the medium?

diamond n=2.45

flint glass n=1.70

barium glass n=1.60

crown glass n=1.523

a)

Crown Glass

b)

Barium Glass

c)

Flint Glass

d)

Diamond

14.

What is the refractive medium if a ray coming from air at an angle of incidence of 50 degrees is refracted through an angle of 35 degrees?

flint glass n=1.70

barium glass n=1.60

crown glass n=1.523

water n=1.33

a)

flint glass

b)

barium glass

c)

crown glass

d)

water

15.

Light has the highest 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=2.45

a)

diamond

b)

water

c)

flint glass

d)

barium glass

16.

Light 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=2.45

a)

diamond

b)

water

c)

flint glass

d)

barium glass

17.

The _________ of light can change when light is refracted because the medium changes.

a)

frequency

b)

medium

c)

wavelength

d)

transparency

18.
When light passes at an angle to the normal from one material into another material in which its speed is higher 
a)
it is bent toward the normal.
b)
it always lies along the normal.
c)
it is unaffected.
d)
it is bent away from the normal.
19.
When light passes at an angle to the normal from one material into another material in which its speed is lower
a)
it is bent towards the normal.
b)
it always lies along the normal.
c)
it is unaffected.
d)
it is bent away from the normal.
20.
What do all waves have in common?
a)
nothing
b)
they carry energy
c)
they absorb light
d)
you can see them
21.

According to Willebord Snell (Snell's Law), light passing from air to glass will cause the light to

a)

maintain its original speed

b)

accelerate while it is in glass

c)

increase its speed

d)

reduce its speed

22.

A ray of light traveling from air into crown glass strikes the surface at an angle of 30 degrees. What is the angle of refraction? (air n=1, crown glass n=1.532)

a)

39.7 degrees

b)

19.2 degrees

c)

59.1 degrees

d)

12.3 degrees

23.

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

a)

1.33

b)

2.21

c)

2.37

d)

1.72

24.

If 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)

a)

15 degrees

b)

22 degrees

c)

43 degrees

d)

17 degrees

25.
What is this image an example of?
a)
Reflection
b)
Diffusion
c)
Refraction

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