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Refraction of Light

Total questions: 18

Worksheet time: 15mins

Name
Class
Date
1.
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
2.
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
3.
Glass has a _____________ index of refraction than air.
a)
Equal
b)
Greater
c)
Less
d)
Impossible to say
4.
Light travels through a liquid at 2.25 EE 8 m/s. What is the index of the liquid?
a)
1.33
b)
1.0
c)
1.523
d)
2.45
5.
How does light behave as it enters these mediums?
a)
continue its path as straight line.
b)
bends toward the normal
c)
bends away from the normal
d)
reflects
6.
The velocity of light in vacuum is _______ m/s.
a)
3x108
b)
3x1012
c)
3x106
d)
3x1010
7.
The formula to calculate the refractive index is
a)
n=cv
b)
n=v/c
c)
n=c/v
d)
v=nc
8.
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
9.

Which of the following factors change when light refracts?

a)

Frequency only

b)

Wavelength only

c)

Speed and frequency

d)

Wavelength and speed

10.

What happens to the speed and frequency of a light ray when it passes from air into water?

a)

The speed decreases and the frequency increases

b)

The speed decreases and the frequency remains the same

c)

The speed increases and the frequency increases

d)

The speed increases and the frequency remains the same

11.

Light passes into a glass block. Which is the angle of refraction?

a)

A

b)

B

c)

C

d)

D

12.
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
13.
The imaginary line perpendicular to a reflecting surface is called _____.
a)
crooked line
b)
parallel line
c)
angular line
d)
normal line
14.

The refractive index of any medium is always _______.

a)

less than 1

b)

greater than 1

c)

1

d)

0

15.

Diamond has a refractive index of 2.42. The speed of light in a vacuum (or in air) is 300,000 km/s. Calculate the speed of light in diamond.

a)

350,000 km/s

b)

123,967 km/s

c)

123,966,942 km/s

d)

225,564 km/s

16.
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.
17.
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.
18.
How is light affected by an increase in the index of refraction?
a)
Its frequency increases
b)
Its frequency decreases
c)
Its speed increases
d)
Its speed decreases

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