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light

Total questions: 97

Worksheet time: 2hrs 37mins

Name
Class
Date
1.

Light travels in straight lines until reflected by another object. Which illustration best shows the light being reflected?

a)
b)
c)
d)
2.

Which of the following is the best example of an object absorbing light?

a)

A black sweater in the sun.

b)

A clean window in the sun.

c)

A curved mirror in the sun.

d)

A long shadow in the sun.

3.

Which illustration best shows light being refracted?

a)
b)
c)
d)
4.

Which object refracted the laser beam?

a)

Silver locket

b)

Picture frame

c)

Glass marble

d)

Notebook

5.

Which of the following is demonstrated when light bounces off mirrors or shiny surfaces?

a)

Scattering

b)

Refraction

c)

Absorption

d)

Reflection

6.

Which of these provides the best explanation for why the pencil appears broken?

a)

The pencil absorbs the light rays that hit it.

b)

Water reflects light rays away from the pencil.

c)

Light rays are bent by the water in the glass.

d)

The surface of the water reflects the light rays.

7.

The two kinds of reflection are:

a)

transparent and translucent.

b)

opaque and translucent.

c)

regular and diffuse.

8.
What happens to light after it hits a mirror?
a)
It goes through the mirror and bend.
b)
It goes straight through the mirror.
c)
It goes around the mirror.
d)
It bounces off the mirror.
9.

What type of surface best reflects light?

a)

Dull

b)

Shiny

c)

Clear

d)

Black

10.

__________ objects blur light as it passes through them.

a)

Transparent

b)

Translucent

c)

Opaque

d)

Refraction

11.
What is the main source of light?
a)
Light bulbs
b)
Candles
c)
Sun
d)
Fluorescent lights
12.

When an object moves closer to a light source, its shadow...

a)

Gets smaller

b)

Gets bigger

c)

Changes shape

d)

Stays the same size

13.
The ray of light that strikes a reflecting surface is called ________.
a)
incident ray
b)
reflected ray
c)
normal ray
d)
none of the above
14.
The imaginary line perpendicular to a reflecting surface is called _____.
a)
crooked line
b)
parallel line
c)
angular line
d)
normal line
15.

Which light source causes shadows in the outdoor environment ?

a)

The sun

b)

The light bulb

c)

The house

d)

The school

16.

Why is the spectrum of light seperated into its components of colour when white light is directed to a prism?

a)

The different colours in the white light bend away from the normal line at different angles when entering prism

b)

The different colours in the white light bend towards the normal line at different angles when entering prism

c)

The different colours in the white light bend away from the normal at same speed to each other when entering prism

d)

The different colours in the white light bend towards the normal at same speed to each other when entering prism

17.

This is the example of dispersion of light

a)

sky looks bright orange in the evening

b)

shadow

c)

Pool seems shallower

d)

rainbow

18.

These are all colours of spectrum except

a)

indigo

b)

blue

c)

purple

d)

green

19.

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.

20.

As you look at a rainbow, the colors go from top to bottom in what order?

a)

ROYGBIV

b)

VIBGYOR

c)

GYORVIB

d)

pretty to beautiful

21.

Why can't we see anything in a dark room?

a)

A) Everything is black in colour.

b)

B) Our eyes do not work in darkness.

c)

C) No light reaches our eyes.

d)

D) All the light gets scattered.

22.

Which of the following are used in projectors?

a)

A) Concave lens

b)

B) Convex mirrors

c)

C) Plane mirrors

d)

D) Convex lenses

23.

What happens during lateral inversion?

a)

A) The right of the object will be on the right side of the image.

b)

B) The left side of the object will be on the left side of the image.

c)

C) The upper part of the object will be at the bottom of the object.

d)

D) The right side of the object will be on the left side of the image.

24.

Which one of the following statements is true?

a)

A) A plane mirror sometimes forms an inverted image.

b)

B) A concave mirror always forms a virtual, erect and diminished image.

c)

C) A concave lens always forms a virtual, erect and diminished image.

d)

D) All of the above

25.

A reflecting surface is curved outwards. Which of the following mirrors is it likely to be?

a)

A) Concave

b)

B) Plane

c)

C) Convex

d)

D) All of the above

26.

Why are convex mirrors used by drivers as rear view mirrors in vehicles?

a)

A) They reflect light better than other mirrors.

b)

B) They produce images which are clearer than those produced by others

c)

C) They produce magnified images.

d)

D) They give a wide field of view.

27.

An object placed 3 m from a plane mirror is shifted by 0.4 m away from the mirror. What is the new distance between the object and its image?

a)

A) 6.4 m

b)

B) 6.8 m

c)

C) 6 m

d)

D) 5.2 m

28.

An object was placed in front of the plane mirror as shown in the given picture. How will its image formed in plane mirror look like ?

a)
b)
c)
d)
29.

Why is a spectrum of seven colours formed when sunlight passes through a prism?

a)

A) White light is a mixture of seven colours.

b)

B) The different colours of light is reflected at different angles in a glass prism.

c)

C) The prism adds colour to the white sunlight.

d)

D) Light travels at high speed.

30.

Which of the following letters will be seen without any change in a plane mirror?

a)

A) S

b)

B) T

c)

C) L

d)

D) P

31.

Which of the following is NOT a characteristic feature of a convex mirror?

a)

A) The image is virtual

b)

B) The image is diminished in size.

c)

C) The image is erect.

d)

D) The image is real.

32.

Which of the following can form enlarged, virtual images?

a)

A) Convex mirrors

b)

B) Concave mirrors

c)

C) Plane mirrors

d)

D) Concave lens

33.

Which of the following are used as reflectors in street lights to spread the light over a wide area ?

a)

A) Concave mirrors

b)

B) Plane mirrors

c)

C) Convex mirrors

d)

D) Convex lens

34.

What is a stream of light called?

a)

A) Ray

b)

B) Beam

c)

C) Twilight

d)

D) Sunlight

35.

The light beam emanating from a torch appears to be starting from a point and travels in various directions.

Identify the nature of light emitted from a torchlight.

a)

A) Convergent

b)

B) Divergent

c)

C) Parallel

d)

D) Irregular

36.

Which of the following is a reflector of light?

a)

A) The sun

b)

B) The moon

c)

C) The star

d)

D ) Fire

37.

What is called a source of light?

a)

A) An object that can absorb light

b)

B) An object that can reflect light

c)

C) An object that can refract light

d)

D) An object that can emit light

38.
What color has the shortest wavelength, or the highest frequency?
a)
yellow
b)
blue
c)
red
d)
violet
39.
What does reflection mean?
a)
bending light
b)
bouncing light
40.
What does refraction mean?
a)
bending light
b)
bouncing light
41.

Light travels through an object during

a)

absorption

b)

reflection

c)

transmission

d)

diffraction

42.
The full spectrum of light energy is called the__________
a)
broad spectrum
b)
electromagnetic spectrum
c)
helium spectrum 
d)
natural light spectrum
43.

What is the earth's primary source of light energy?

a)

moon

b)

sun

c)

waves

d)

fire

44.
A cut piece of clear glass or plastic in the form of a triangle or other geometric shape.
a)
Person
b)
Prison
c)
Prism
d)
Preacher
45.
When light strikes an object with a rough surface, photons bounce off at random angles.
a)
Occer
b)
Scope
c)
Scattering
d)
Scattegories
46.
Transfer of energy when a wave disappears into a surface
a)
Transparent
b)
Refraction
c)
Reflection
d)
Absorption
47.
Light travels
a)
around corners
b)
in a straight line
48.
mirror
a)
absorbs
b)
reflects 
c)
refracts
49.
smooth, shiny surfaces
a)
reflect
b)
refract
c)
absorb
50.
sunglasses and tinted windows
a)
refraction
b)
absorption
c)
reflection
51.
rainbow
a)
light is reflected
b)
light is refracted
c)
light is absorbed
52.
Which material is NOT translucent?
a)
Brick
b)
Tissue paper
c)
Thin sheet of plastic
53.
What is light?
a)
A form of energy
b)
A form of sound
c)
bright stuff
d)
A form of excitement
54.
What is the main source of light?
a)
Light bulbs
b)
Candles
c)
Sun
d)
Fluorescent lights
55.
What color has the shortest wavelength, or the highest frequency?
a)
yellow
b)
blue
c)
red
d)
violet
56.
What is the correct order of the colors of the rainbow?
a)
Red, orange, yellow, green, blue, indigo, violet
b)
red, orange, yellow, blue, green, indigo, violet
c)
orange, yellow, red, blue, purple, indigo
d)
red, orange, yellow, green, indigo
57.

Which travels faster?

a)

sound

b)

light

c)

water

58.

Which of the following is a source of light

a)

Eye

b)

Mirror

c)

Fire

d)

the moon

59.

When light bounces of a mirror,it is

a)

Reflected

b)

Corrected

c)

Absorbed

d)

Refracted

60.

The picture shows an area of Yosemite National Park.Which statement about light is supported by this picture?

a)

Light travels in a straight line until it enters a definite material like water in a lake

b)

Light can refract in air and in clean water

c)

The water in a lake is blue because light forms an image

d)

Light is reflected off the smooth surface of the lake

61.

This is an example of

a)

Reflection

b)

Refraction

c)

Absorption

d)

None of the above

62.

What happen to the light as it passess from air to the transparent window

a)

Light changes speed but not direction

b)

All light is reflected

c)

Light changes speed and direction

d)

All light pass through

63.

Latif wakes up one morning and sees that it is foggy outside.Whcih term best describe the fog he sees

a)

Opaque

b)

Reflective

c)

Transparent

d)

Translucent

64.

During a thunderstorm, Sanjay saw lightning and then heard thunder 5s later.Why did he see the lightning before he heard the thunder

a)

Sound travel faster than light

b)

Light travel faster than sound

c)

He would have seen the thunder and lightning at the same time

d)

There is no reason

65.

Which of the following allow light to pass through it easily

a)

A metal plate

b)

Glass tumbler

c)

Book

d)

A wooden block

66.

The property of light by which it travels in a straight line is known as

a)

Rectilinear propagation of light

b)

lateral inversion

c)

Circular motion

d)

random motion

67.

Example of a luminous object

a)

Sun

b)

Moon

c)

Pencil

d)

Wall

68.

Latha is observing her image in a plane mirror. The distance between the mirror and her image is 6 m. If she moves 2m towards the mirror then the distance between latha and her image will be

a)

8 m

b)

4 m

c)

10 m

d)

5 m

69.

If you are standing 2m away from a plane mirror the distance between you and your image are

a)

2m

b)

4m

c)

6m

d)

8m

70.

Angle between incident and reflected ray i.e. angle AOB is

a)

30 degree

b)

40 degree

c)

120 degree

d)

180 degree

71.

Images that can't be captured on a screen are called

a)

Real image

b)

Virtual image

c)

Proper image

d)

Imaginary image

72.
Light travels in a straight line
a)
True
b)
False
73.
The Law of Reflection:
The angle of incidence is _________ the angle of reflection
a)
bigger than
b)
the same as
c)
smaller than
74.
Luminous means...
a)
Gives out its own light
b)
Reflects light from other things
75.
The color you see is the color that is ___.
a)
reflected
b)
absorbed
76.
If light strikes a mirror at a 50⁰ angle, what angle will it come off of the mirror?
a)
50⁰
b)
70⁰
c)
45⁰
d)
30⁰
77.

In the diagram, which letter represents the angle of incidence?

a)

A

b)

B

c)

C

d)

D

78.

Bouncing of a light ray when it strikes a reflecting surface is called.........

a)

Refraction

b)

Dispersion

c)

Reflection

d)

Diffraction

79.

which of the following is not a property of the image formed by a [lane mirror?

a)

virtual and erect

b)

Object size = image size

c)

object distance = image distance

d)

Real and inverted

80.

Which of the following is a concave mirror?

a)
b)
c)
d)
81.

Four students A, B, C and D performed the experiment to determine the focal length of a concave mirror by obtaining the image of a distant tree on a screen. They measured the distances between the screen and the mirror as shown in the above figure.

The correct way of measuring accurate focal length of the mirror is

a)

A

b)

B

c)

C

d)

D

82.

which of the following ray diagrams is correct for the ray of light incident on a concave mirror as shown in the figure 10.6?

a)

A

b)

B

c)

C

d)

D

83.

Convex mirror is also called as

a)

converging mirror

b)

diverging mirror

c)

plane mirror

d)

silver mirror

84.

The relation between focal length and radius of curvature is

a)

R = 2f

b)

1/f = 2R

c)

f = R/2

d)

R = 2/f

85.

The point on the spherical mirror at the middle of the surface is called

a)

focus

b)

centre of curvature

c)

pole

d)

radius of curvature

86.

The focal length of a plane mirror is ........

a)

infinite

b)

zero

c)

1m

d)

100m

87.

A convex mirror has a focal length 12 cm. Then its radius of curvature is ........ cm

a)

24

b)

12

c)

6

d)

1.2

88.

When the object is in between the centre of curvature (C) and focus (F) of a concave mirror, then the position of the image is ...........

a)

At focus

b)

At the centre of curvature

c)

at infinity

d)

beyond the centre of curvature

89.

Which of the following characteristic of an image formed for a convex mirror?

a)

Enlarged size

b)

virtual image

c)

Real image

d)

inverted image

90.

Which mirror is shown in the figure?

a)

convex mirror

b)

concave mirror

c)

plane mirror

d)

silver mirror

91.

Mirror formula is defined as ........

a)

A

b)

B

c)

C

d)

D

92.

When the object is at infinity, a point sized image is formed at ................ by the convex mirror

a)

focus behind the mirror

b)

focus in front of the mirror

c)

radius of curvature

d)

principal axis

93.

The image formed by a concave mirror when the object is placed between the pole and the focus is ......

a)

virtual, erect and magnified

b)

virtual, erect and diminished

c)

real, inverted and magnified

d)

real, inverted and diminished

94.

The angle of incidence of a ray of light passing through the centre of curvature of a concave mirror is ........... degree

a)

105

b)

180

c)

90

d)

0

95.

According to laws of reflection,

a)

angle of incidence > angle of reflection

b)

angle of incidence < angle of reflection

c)

angle of incidence = angle of reflection

d)

both 1 and 2

96.

Where will be the images of the Sun or the moon are formed by a concave mirror?

a)

Focus

b)

Pole

c)

centre of curvature

d)

beyond centre of curvature

97.

What is the size of the image formed when an object is kept at the focus in front of concave mirror?

a)

enlarged

b)

diminished

c)

highly enlarged

d)

highly diminished

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