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Refraction of light

Total questions: 53

Worksheet time: 31mins

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.
According to Willebord Snell, 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
4.
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.
5.
Glass has a _____________ index of refraction than air.
a)
Equal
b)
Greater
c)
Less
d)
Impossible to say
6.
The fact the two angles are the same is an example of....
a)
Refraction
b)
Angle of Incidence
c)
Law of reflection
d)
Magnification
7.
This shows the phenomenon known as....
a)
reflection
b)
refraction
c)
mirrors
d)
focal point
8.
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
9.
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
10.
The velocity of light in vacuum is _______ m/s.
a)
3x108
b)
3x1012
c)
3x106
d)
3x1010
11.
The formula to calculate the refractive index is
a)
n=cv
b)
n=v/c
c)
n=c/v
d)
v=nc
12.
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
13.
When a red light ray travels from air into a glass block, its
a)
velocity increases and its wavelength decreases 
b)
velocity decreases and its frequency stays the same
c)
velocity decreases and its frequency increases
d)
velocity remains the same and its wavelength decreases
14.
Light bending as it passes from one medium (object) to another is...
a)
Refraction
b)
Reflection
15.
What form does light travel in?
a)
Curved line
b)
Zig-Zag
c)
Straight Line
16.
Light bending as it passes through a rain drop is an example of...
a)
Refraction
b)
Reflection
17.
What causes light to appear refracted?
a)
temperature
b)
speed
c)
weather
d)
climate
18.
According to Willebord Snell, 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
19.
What is this called?
a)
refraction
b)
reflection
c)
reconstroction
d)
retraction
20.
Absolute refractive index of any medium is always _______.
a)
less than 1
b)
greater than 1
c)
1
d)
0
21.
The velocity of light in vacuum is _______ ms(-1)
a)
3x108
b)
3x1012
c)
3x106
d)
3x1010
22.
Glass has a _____________ index of refraction than air.
a)
Equal
b)
Greater
c)
Less
d)
Impossible to say
23.

Which of the following factors change when light refracts?

a)

Frequency only

b)

Wavelength only

c)

Speed and frequency

d)

Wavelength and speed

24.

A straight glass rod appears to bend when placed in a beaker of water, as shown in the diagram below. What is the best explanation for this phenomenon?

a)

The water is warmer than the air

b)

Light travels faster in water than in air

c)

Light is reflected at the air-water interface

d)

Light is refracted as it crosses the air-water

interface

25.

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

26.

A ray of red light from a laser passes into a semi- circular glass block.What is shown at M?

a)

Dispersion

b)

Rarefaction

c)

Reflection

d)

Refraction

27.

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

a)

A

b)

B

c)

C

d)

D

28.

Which of the following is true regarding the index of refraction of a substance?

a)

n=c/v

b)

n=v/c

c)

n=cv

d)

n=c+v

29.

Which quantity is equivalent to the product of the absolute index of refraction of water and the speed of light in water?

a)

wavelength of light in a vacuum

b)

frequency of light in water

c)

sine of the angle of incidence

d)

speed of light in a vacuum

30.

The diagram below shows a ray of monochromatic light incident on a boundary between air and glass. Which of the letters represent the path after it strikes the glass?

a)

A

b)

B

c)

C

d)

D

31.

If the index of refraction of a certain material is n = 2, the speed of light in this material is ________.

a)

6.7 × 107

b)

1.5 × 108

c)

3.0× 108

d)

6.0 × 108

32.

The speed of light in a piece of plastic is 2.00 × 108 m/s. What is the absolute index of refraction of this plastic?

a)

0.67

b)

1.0

c)

1.33

d)

1.5

33.

Swimming pools and the ocean look _______ than they really are due to refraction

a)

deeper

b)

shallower

c)

wider

d)

darker

34.

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

35.
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.
36.

This diagram illustrates that...

a)

more dense media cause light to get slower and bend towards the normal.

b)

more dense media cause light to get faster and bend towards the normal.

c)

more dense media cause light to get slower and bend away from the normal.

d)

more dense media cause light to get faster and bend away from the normal.

37.

Which one is refraction of light phenomenon

a)
b)
c)
d)
38.

Diagram shows the condition of a spoon in a glass of water.

What can be observed about the spoon?

a)

The spoon looks bent.

b)

The water is clearer.

c)

The water level rises.

d)

Light is refracted.

39.

When does the light is refracted?

a)

When light travels in a straight line

b)

When light is bounced

c)

When light travels in two different mediums

d)

When light cannot pass through an opaque object

40.

What is the conclusion from your observation in this picture?

a)

Light travels in a straight line

b)

Light can be refracted

c)

Light can be reflected

d)

Light can pass through a transparent material

41.

Which of the following shows the principle of light refraction? Tick the correct answers.

a)

A

b)

B

c)

D

d)

E

e)

F

42.
Light changes speed as it travels through various mediums.  What are examples of mediums that light can travel through.
a)
snow and ice
b)
air and water
c)
cloth and wood
d)
glass and wood
43.

What direction does the ray bend when entering a more optically dense material, where the wave travels more slowly?

a)

Towards the normal.

b)

Away from the normal.

c)

No change.

d)

Answer is not listed above.

44.

A ray of light in air is incident at an angle on one side of a rectangular glass block, as shown. Which ray diagram correctly describes the complete path of the ray of light?


(Determine if light bends towards or away from normal at each boundary)

a)
b)
c)
d)
45.

When light hits an area and bounces back it is called:

a)

echo

b)

refraction

c)

reflection

d)

absorbing

46.

Gambar yang menunjukkan arah pembiasan cahaya dari udara ke air adalah ...

a)
b)
c)
d)
47.

What does happen with the light when reaches the border of different transparent medium?

a)

Nothing

b)

Its direction changes

c)

It reflects totally

d)

It is absorbed

48.

What does happen with the light in denser medium?

a)

Light bends TOWARDS the normal.

b)

Light bends AWAY FROM the normal.

c)

Nothing

49.

The index of refraction of a material (except vacuum)

a)

less than 1

b)

more than zero

c)

more than 1

d)

always 1

50.

We can see the depth of a pool

a)

shallower

b)

deeper

c)

in true position

51.

Total internal refraction can occur when light attempts to move from a

a)

cooler to warmer medium

b)

more to less optical dense medium

c)

less to more optical dense medium

d)

always

52.

Where can we see the sun at sunset?

a)

In the true position

b)

Higher

c)

Lower

53.

Which stars twinkle more

a)

no difference

b)

the closer

c)

the further

d)

the bigger

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