NEW
Font size
S
M
L
XL
WorksheetsRefraction
Total questions: 20
Worksheet time: 22mins
Name
Class
Date
1.
The velocity of light in vacuum is _______ m/s
a)
3x108
b)
3x1012
c)
3x106
d)
3x1010
2.
We can see objects because of_______
a)
reflection
b)
refraction
c)
transmission
d)
diffraction
3.
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
4.
Absolute refractive index of any medium is always _______.
a)
less than 1
b)
greater than 1
c)
1
d)
0
5.
Swimming pools and the ocean look shallower than they really are due to:
a)
reflection
b)
dispersion
c)
refraction
d)
total internal reflection
6.
The formula to calculate the refractive index is
a)
n=cv
b)
n=v/c
c)
n=c/v
d)
v=nc
7.
What is this called?
a)
refraction
b)
reflection
c)
reconstroction
d)
retraction
8.
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.
9.
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
10.
Glass has a _____________ index of refraction than air.
a)
Equal
b)
Greater
c)
Less
d)
Impossible to say
11.
The fact the two angles are the same is an example of....
a)
Refraction
b)
Angle of Incidence
c)
Law of reflection
d)
Magnification
12.
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
13.
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
14.
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
15.
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
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.
The point where the rays meet is known as....
a)
Fire
b)
the focal point
c)
refraction
d)
Plane of the lens
17.
The bouncing of light is known as
a)
Mirror
b)
Refraction
c)
Index of refraction
d)
reflection
18.
What is this image showing?
a)
Reflection
b)
Refraction
c)
The law of reflection
d)
Concave Mirror
19.
The image formed in a flat mirror is
a)
larger than the object and farther away.
b)
reduced and closer to the mirror.
c)
a real image of the object.
d)
equal to the height and distance of the object.
20.
Why does the lower part of the child appear so much different in size from the upper part?
a)
The light rays that travel through water and then into air are refracted.
b)
The light rays that travel through water and then into air are enlarged.
c)
The light rays that travel through air and then into water are reflected.
d)
The light rays that travel through air and then into water are reduced.
Reset
