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Light

Total questions: 54

Worksheet time: 33mins

Name
Class
Date
1.

What is light?

a)

A form of energy

b)

bright stuff

c)

A form of excitement

d)

A form of sound

2.

Which way best describes how light moves?

a)

in circles

b)

straight line

c)

faster through opaque objects

d)

slowly

3.

Which material is opaque?

a)

Water

b)

Tissue Paper

c)

Glass

d)

Brick

4.

Which material is transparent?

a)

Wax paper

b)

Tissue paper

c)

Clear Glass

d)

Shoe

5.

What is the main source of light?

a)

Fluorescent lights

b)

Sun

c)

Candles

d)

Light bulbs

6.

What does Translucent mean?

a)

All of the light will pass through

b)

Some of the light will pass through

c)

None of the light will pass through

7.

What does Opaque mean?

a)

None of the light will pass through

b)

Some of the light will pass through

c)

All the light will pass through

8.

Does this object give off its own light?

a)

No

b)

Yes

9.

Does this object give off its own light?

a)

Yes

b)

No

10.
Which images are opaque?
a)
A & C
b)
A,C,E, & F
c)
D, E, & F
d)
A & E
11.

Which travels faster?

a)

sound

b)

light

c)

water

12.

If the angle of incidence equals 30o, so the angle of reflection equals ............o

a)

60o

b)

30o

c)

45o

d)

90o

13.

The angle between the incident light ray and normal is called ............

a)

angle of incidence

b)

angle of reflection

c)

normal angle

d)

no correct answer

14.

The light ray tat come out from the reflecting surface is called ..............

a)

Normal

b)

Incident light ray

c)

reflected light ray

d)

refracted ray

15.

The following diagram shows the ray diagram when a torch light is torched towards a mirror. Which of the following is the correct reflected ray?

a)
b)
c)
d)
16.
The imaginary line perpendicular to a reflecting surface is called _____.
a)
crooked line
b)
parallel line
c)
angular line
d)
normal line
17.
Law of reflection state that - The angle of incidence is .................. to the angle of reflection.
a)
equal
b)
double
c)
half
18.

Which letter best represents the angle of incidence?

a)

A

b)

B

c)

C

19.

Which letter best represents the normal line?

a)

A

b)

B

c)

C

20.

What happens when a beam of light hits a solid object?

a)

The light passes through it

b)

All the light is absorbed

c)

A shadow forms

d)

All the light is reflected

21.

What happens when light hits a shiny or smooth surface?

a)

It disappears.

b)

It is refracted.

c)

It is absorbed.

d)

It is reflected.

22.

What is it called when light bends as it moves from one substance to another?

a)

Absorption

b)

Reflection

c)

Refraction

d)

Incidence

23.

When light passes from air to water, what happens to the speed of the light?

a)

speeds up

b)

slows down

c)

stays the same

24.
This shows the phenomenon known as....
a)
reflection
b)
refraction
c)
mirrors
d)
focal point
25.
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
26.
The point where the rays meet is known as....
a)
Fire
b)
the focal point
c)
refraction
d)
Plane of the lens
27.
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.
28.

Why does the straw appear to be bent?

a)

light is reflected

b)

light is absorbed

c)

light is turned

d)

light is refracted

29.
We see shadows because light travels in a __________________ line.
a)
curved
b)
straight
c)
rainbow
30.

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

a)

A

b)

B

c)

C

d)

D

31.

A ray of light travels from air into a glass block.


Which diagram correctly shows the path of the ray through the glass block?

a)

A

b)

B

c)

C

d)

D

32.

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.

33.
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.
34.

When the light falls perpendicular on a separating surface between two transparent medium, it will .................

a)

bend away from the normal

b)

bend close to the normal

c)

returning back on itself

d)

passes without any refraction

35.

How does a concave lens differ from a convex lens?

a)

A convex lens is another way to describe a plane mirror; a concave lens is curved

b)

A concave lens is curved inward on both sides; a convex lens is on only one side

c)

A convex lens has a thick center and thin edges, a concave lens has a thin center and thicker edges

d)

A convex lens has a thin center and thick edges. a concave lens has a thick center and thinner edges

36.
What does the word "diverging" mean?
a)
to spread apart
b)
to come together
c)
parallel
d)
perpendicular
37.
A diverging lens is also known as a ____lens.
a)
refracted
b)
diffracted
c)
convex
d)
concave
38.

Which one of these is a convex lens?

a)
b)
c)

None of the above

39.

Which lens represents the path light takes through a concave lens?

a)
b)
c)
d)
40.

Which figure represents the path light takes through a convex lens?

a)
b)
c)
d)
41.

What does the word "converging" mean?

a)
to spread apart
b)
to come together
c)
parallel
d)
perpendicular
42.

The breaking up of white light into its component .

Based on the statement given, name the process that takes place in the white light.

a)

Dispersion

b)

Reflection

c)

Refraction

d)

Scattering

43.

How many components of white light?

a)

5

b)

6

c)

7

d)

8

44.

This is the example of dispersion of light

a)

sky looks bright orange in the evening

b)

shadow

c)

Pool seems shallower

d)

rainbow

45.

These are all colours of spectrum except

a)

indigo

b)

blue

c)

purple

d)

green

46.

Why is red light is at the top whileviolet at the bottom of the spectrum?

a)

Violet light has the medium speed so it is refracted the least.

b)

Violet light has the highest speed so it is refracted the least

c)

Red light has the slowest speed so it is refracted the least

d)

Red light has the highest speed so it is refracted the least.

47.

A transparent object that bends light into rainbow colors.

a)

prism

b)

mirror

c)

convex lens

d)

concave lens

48.

Which color is refracted the most in a rainbow?

a)

Red

b)

Violet

c)

Indigo

d)

Blue

e)

Yellow

49.
What are the three primary colours of light?
a)
Red,Yellow,Blue
b)
Red,Green,Yellow
c)
Red,Green,Blue
d)
Yellow,Blue,Green
50.
Primary colors of light can combine to make
a)
black light
b)
white light
c)
primary pigments
d)
ultraviolet light
51.
An object appears red because it
a)
reflects light waves of all colors
b)
reflects light waves of red
c)
absorbs light waves of red
d)
transmits light waves of all colors
52.
What are the actual colors of the rainbow?
a)
ROYGVIB
b)
ROYGBV
c)
ROYGBIV
d)
ROYGCB
53.
Which pair of colours do NOT combine to make the correct secondary colours?
a)
Red + Blue = Magenta
b)
Blue + Green = Yellow
c)
Blue + Green = Cyan
d)
Red + Green = Yellow
54.
The color that we perceive an object has depends on the 
a)
The light that is reflected by the object.
b)
The light that is absorbed by the object.
c)
The light that is transmitted by the object.
d)
The light that is created by the object.

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