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light and color

Total questions: 20

Worksheet time: 27mins

Name
Class
Date
1.

1.The image of a clock face as seen in a plane mirror is shown.

What is the actual time on the clock?

a)

1.25

b)

1.35

c)

10.25

d)

10.35

2.

2.One of the effects of passing a ray of white light through a prism is to split the light into colours.

One of the effects of passing a ray of white light through a prism is to split the light into colours.

a)

deviation

b)

dispersion

c)

reflection

d)

refraction

3.

3.Which diagram correctly shows the paths taken by red and blue light when a beam of white light

enters a glass prism?

a)
b)
c)
d)
4.

4.The diagram shows a ray of light entering a block of glass.

Which numbered angles are the angles of incidence and of refraction?

a)
b)
c)
d)
5.

5.Which diagram correctly shows a ray of light passing through a rectangular glass block?

a)
b)
c)
d)
6.

6.A man sees a stone at the bottom of a pool of water.

Which path could be taken by light from the stone to the man?

a)

A

b)

B

c)

C

d)

D

7.

7.A ray of light is reflected by two parallel plane mirrors X and Y.

Which statement is correct?

a)

The angle of incidence at mirror X is 30°.

b)

The angle of incidence at mirror Y is 60°.

c)

The angle of reflection at mirror X is 120°.

d)

The angle of reflection at mirror Y is 0°.

8.

8.A plane mirror is used to form an image of an object.

At which labelled point is the image formed?

a)

A

b)

B

c)

C

d)

D

9.
What are the three primary colors of light?
a)
Red, Green, Blue
b)
Green, Yellow, Blue
c)
Cyan, Magenta Yellow
d)
Cyan, Magenta, Black
10.
What kind of light is sunlight?
a)
White Light
b)
Infrared Light
c)
Yellow Light
d)
Red Light
11.

A material that reflects or absorbs any light that strikes is called what?

a)

translucent

b)

transparent

c)

opaque

d)

concave

12.

When you see the color black...

a)

All colors are reflecting

b)

All colors are absorbed

c)

The color blacl is reflecting

d)

the color black is absorbed

13.
Light travels ___________.
a)
backwards
b)
in a straight line
c)
in curves
d)
at a right angle
14.

A shirt appears yellow under normal white light conditions. What color does it appear if illuminated with cyan light?

a)

Red

b)

Green

c)

Blue

d)

Yellow

e)

Black

15.
Which explains why the fork looks different under water?
a)
light can't pass through the glass
b)
the wavelength of light lengthens
c)
the amount of light increases when going through water
d)
light is refracted at an angle
16.
Why do we see objects as white?
a)
They absorb all light
b)
They reflect all light
c)
They absorb some light and reflect some light
17.

From the diagram, which of the following is correct?

a)

Angle of reflection is bigger than the Angle of incidence

b)

Angle of reflection is smaller than the Angle of incidence

c)

Angle of reflection is equal to the Angle of incidence

d)

Angle of reflection is sometimes bigger than the Angle of incidence

18.

_______ is the imaginary line perpendicular to the surface.

a)

Normal

b)

Angle of incidence

c)

Angle of reflection

19.

Which of the following is not a primary color of light?

a)

Red

b)

Yellow

c)

Green

d)

Blue

20.
Define REFRACTION
a)
When light bounces off something smooth at the same angle it hits the object
b)
When light bends as it passes through an object
c)
When light bounces off a rough surface at the same angle it hits the object
d)
When light looks green but is actually white.