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Science Light

Total questions: 140

Worksheet time: 2hrs 41mins

Name
Class
Date
1.

A smooth shining surface, which rebounds the light back in same or in different direction, is called

a)

Mirror

b)

Incident ray

c)

Lens

d)

Idealisation

2.

Band of seven colours is called

a)

dispersion

b)

Normal

c)

spectrum

d)

VIBGYOR

3.

Front balged part of the eyeball is called

a)

PUPIL

b)

CORNEA

c)

RETINA

d)

IRIS

4.

Which one of the following statements is correct regarding rods and cones in the human eye?

a)

Cones are sensitive to dim light

b)

Cones are sensitive to bright light

c)

Rods can sense colour

d)

Rods are sensitive to bright light

5.

Name the type of mirror used as a backview mirror.

a)

Convex mirror

b)

Plane mirror

c)

Concave mirror

d)

Any of these

6.

The image formed by a camera and a simple microscope are respectively

a)

real and real

b)

real and virtual

c)

virtual and real

d)

virtual and virtual

7.

What is the angle of incidence of a ray if the reflected ray is at an angle of 90° to the incident ray?

a)

60°

b)

45°

c)

180°

d)

90°

e)

160°

8.

The defect due to which a person is not able to see the distant objects clearly:

a)

Myopia

b)

Cataract

c)

Hypermetropia

d)

Cornea

9.

If the angle of incidence of light falling on a plane mirror is 30°, what will be the angle of reflection?

a)

60°

b)

30°

c)

55°

d)

40°

10.

When we stand in front of our dressing table, our left hand seems to be right and right seems to be left. This is called

a)

mirage

b)

Up -side down phenomenon

c)

Left-right confusion

d)

Lateral inversion

11.

A smooth shining surface, which rebounds the light back in same or in different direction, is called

a)

Mirror

b)

Incident ray

c)

Lens

d)

Idealisation

12.

Front balged part of the eyeball is called

a)

PUPIL

b)

CORNEA

c)

RETINA

d)

IRIS

13.

The splitting of white light into its seven constituent colours is called

a)

refraction

b)

dispersion

c)

deviation

d)

reflection

14.

The iris is the coloured part of the eye

a)

true

b)

false

15.

What makes objects visible ?

a)

the absorption of light by objects

b)

the reflected light from the object

c)

the total internal reflection taking place in an object

16.

If the angle of incidence of light falling on a plane mirror is 30°, what will be the angle of reflection?

a)

60°

b)

30°

c)

55°

d)

40°

17.

When we stand in front of our dressing table, our left hand seems to be right and right seems to be left. This is called

a)

mirage

b)

Up -side down phenomenon

c)

Left-right confusion

d)

Lateral inversion

18.

Angle of incidence is always

a)

equal to angle of reflection

b)

equal to angle of refraction

c)

more than angle of reflection

d)

less than refraction

19.

The angle of reflection is equal to the angle of incidence.

a)

sometimes

b)

always

c)

never

d)

under special case

20.

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

21.

the lens focuses light on the back of the eye, on a layer called

a)

retina

b)

optic nerves

c)

pupil

d)

iris

22.

The impression of an image does not vanish immediately from the retina.It persits there for about ___________ of a second.

a)

1/16 th

b)

1/5 th

c)

1

d)

6

23.

An interesting feature of a ____________ is that you will never see the same pattern again.

a)

periscope

b)

telescope

c)

kaledioscope

d)

mirror

24.

sunlight called white light consits of __________________

colours

a)

1

b)

5

c)

0

d)

7

25.

Diffused / irregular reflection takes place from

a)

rough surface

b)

smooth surface

26.

_______ cell sense colours in retina

a)

Rods

b)

Cones

c)

Both a and b

d)

Optic nerve

27.

In old age eyesight becomes foggy when it happens person is said to have __________

a)

Myopia

b)

Cataract

c)

Hypermetropia

d)

Short sight

28.

Sensations felt by the nerve cells are transmitted to the brain through the _______

a)

Optic nerve

b)

Blind spot

c)

Nerve cell

d)

Rods

29.

_________ controls the amount of light entering into the eye

a)

Cornea

b)

Pupil

c)

Iris

d)

Retina

30.

Braille system has ____ dots patterns and characters

a)

72

b)

73

c)

63

d)

64

31.

Splitting of light into its colours is known as ________ of light

a)

VIBGYOR

b)

Spectrum

c)

Rainbow

d)

Dispersion

32.

__________ are used in submarines, tanks and also by soldiers in bunkers to see things outside

a)

Periscope

b)

Kaleidoscope

c)

Multiple images

d)

Dispersion

33.

The comfortable distance at which a person can read is about ______

a)

35m

b)

35cm

c)

25cm

d)

25m

34.

Lack of __________ in foodstuff is responsible for many eye troubles

a)

Vitamin B complex

b)

Vitamin D

c)

Vitamin C

d)

Vitamin A

35.

An image formed by a mirror the left of the object appears on the right and the right appears on the left this is known as _________

a)

Lateral inversion

b)

Inverted image

c)

Virtual image

36.

Name a device which works on the reflection of reflected light.

a)

Kaleidoscope

b)

Periscope

37.

Which option is not the law of reflection?

a)

The incident ray, the reflected ray and the normal at the point of incidence all lie in the same plane

b)

The angle of incidence and the angle of reflection are always equal

c)

Angle of reflection = normal

38.

Which part of the eye helps to focus the image?

a)

Retina

b)

Iris

c)

Ciliary Muscle

d)

Eye Lens

39.

The English Braille System uses           dots.

a)

2

b)

5

c)

7

d)

6

40.

How is hypermetropia corrected?

(a)  

41.

Which is NOT a color seen in the Color Spectrum?

a)

Black

b)

Indigo

c)

Orange

d)

Red

42.

How many images can be formed when two mirrors are kept parallel to each other.

a)

2

b)

Infinite

c)

4

43.

What is the persistence of vision.

a)

1/16 of a second

b)

1/14 of a second

c)

1/15 of a second

d)

1/19 of a second

44.

Which part of the eye protects the interior from accidents? 

a)

Pupil

b)

Cornea

c)

Rods

d)

Retina

45.

Image formed in a plane mirror undergoes ___________ Inversion.

a)

Lateral Inversion

b)

Upright

c)

Erect

46.

In which year was the Braille System Published?

a)

1820

b)

1827

c)

1823

d)

1821

47.
Light travels
a)
around corners
b)
in a straight line
48.
Smooth surfaces _______ a lot of light.
a)
reflect
b)
bend
c)
absorb
d)
twist
49.
What does light do when it hits an object that it cannot pass through?
a)
It creates a shadow
b)
It passes through anyway
50.

If light hits something transparent , it will...

a)

make a shadow

b)

pass through

c)

stop

51.

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

52.

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

53.

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

a)

30 degree

b)

40 degree

c)

120 degree

d)

180 degree

54.

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

a)

Real image

b)

Virtual image

c)

Proper image

d)

Imaginary image

55.

Convex lens is also called as

a)

Diverging lens

b)

Converging lens

c)

Plane lens

d)

Power lens

56.

Boojho and Paheli were given one mirror each by their teacher. Boojho found his image to be erect and of the same size, whereas Paheli found her image erect and smaller in size. This means that the mirrors of Boojho and Paheli respectively are

a)

plane mirror and concave mirror

b)

convex mirror and plane mirror

c)

plane mirror and convex mirror

d)

concave mirror and convex mirror

57.

Which of the following always diverge light rays?

a)

Convex mirror and plane mirror

b)

Concave lens and convex mirror

c)

Concave mirror and convex lens

d)

Concave lens and convex mirror

58.

Which of the following would you prefer to use while reading small letters found in a dictionary?

(a) A convex lens

(b) A convex mirror

(c) A concave lens

(d) Either (a) or (b)

a)

A

b)

B

c)

C

d)

D

59.

if an object is placed at a distance of 0.5 m in front of a plane mirror, the distance between the object and the image formed by the mirror will be

a)

2m

b)

1 m

c)

0.5 m

d)

0.25 m

60.

A virtual image

(a) can be formed on the screen

(b) cannot be formed on the screen

(c) is formed only by a plane mirror

(d) is formed only by the convex mirror

a)

a

b)

b

c)

c

d)

d

61.

This situation shows that

a)

light travels in a straight line

b)

light is everywhere

c)

light penetrates certain objects

d)

light is produces by the Sun

62.

Which of the following shows that light travels in a straight line?

a)
b)
c)
d)
63.

What conclusion can be made from this investigation?

a)

Light travels in parallel

b)

Light travels in a straight line

c)

Light cannot pass through and opaque object

d)

Light cannot bend

64.

There is no shadow formed on the screen. Why?

a)

The object is opaque

b)

The light source is too dim

c)

The object is transparent

d)

The object is translucent

65.

This investigation is carried out to show that

a)

light travels in a straight line

b)

light can be seen through the holes

c)

light penetrates a transparent object

d)

light travels in many ways

66.
Light bounces when it is 
a)
reflected
b)
absorbed
c)
refracted
67.
Light bends when it is 
a)
refracted
b)
reflected
c)
absorbed
68.
mirror
a)
absorbs
b)
reflects 
c)
refracts
69.
rainbow
a)
light is reflected
b)
light is refracted
c)
light is absorbed
70.
The bending of light when it moves from one material to another.
a)
reflection
b)
absorption
c)
prism
d)
refraction
71.
Shadows are formed when light is
a)
reflected
b)
refracted
c)
diffracted
d)
absorbed
72.
An example of opaque.
a)
metal spoon
b)
wax paper
c)
window
d)
frosted glass
73.

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

74.

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

75.

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

a)

30 degree

b)

40 degree

c)

120 degree

d)

180 degree

76.

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

a)

Real image

b)

Virtual image

c)

Proper image

d)

Imaginary image

77.

Convex lens is also called as

a)

Diverging lens

b)

Converging lens

c)

Plane lens

d)

Power lens

78.

A refracting telescope uses a concave and a

a)

Concave mirror

b)

Convex lens

c)

Both a and c

d)

Convex mirror

79.

X is a surface that cannot produce clear images. What is X?

a)

Smooth surface

b)

Ideal surface

c)

Smooth but curved surface

d)

Rough surface

80.

How many images are obtained when plane mirrors are arranged parallel to each other?

a)

Single Image

b)

Zero image

c)

Infinite number of images

d)

Ten images

81.
Why does an apple appear red?
a)
All colors are absorbed & none are reflected
b)
All colors are absorbed except for blue, which is reflected
c)
All colors are reflected and none are absorbed
d)
All colors are absorbed except for red, which is reflected
82.
Which of the following would not reflect light?
a)
Mirror
b)
Water
c)
Glasses
d)
Brick Wall
83.
What percentage of colors makes white light?
a)
100% of red, green, and blue
b)
100% of red, blue, and yellow
c)
0% of red, green, and blue
d)
50% of all colors
84.
A girl in her bedroom saw her sister break her mother's lamp in the living room.  Explain how this could be possible.
a)
The girl can see through the wall.
b)
The girl can see her sister, because light can bend.
c)
The girl can see her sister because of a reflective surface in the kitchen.
d)
Since there is light in the living room and bedroom, she is able to see.
85.
Which term describes when light bounces off of a smooth surface?  
a)
Refraction
b)
Transmission
c)
Absorption
d)
Reflection
86.
The bending of waves as they pass from one substance into another.
a)
Reaction
b)
Reflection
c)
Refraction
d)
Repost
87.
Band of color in a rainbow, or from a light passing through a prism.
a)
Spectrum
b)
Space
c)
Prism
d)
Refraction
88.
Blurs light as it passes through
a)
Transparent
b)
Translucent
c)
Opaque
d)
Refraction
89.

At what point is the laser being reflected?

a)

A

b)

B

c)

C

d)

D

90.

Caleb is sitting near the window on a sunny day. When he closes the curtain, the room becomes darker. What property of the curtain allows it to make the room darker?

a)

The curtain absorbs light.

b)

The curtain is brightly colored.

c)

The curtain folds easily.

d)

The curtain is rectangular shape.

91.

Which object refracted the laser beam?

a)

Silver locket

b)

Picture frame

c)

Glass marble

d)

Notebook

92.

What makes it possible to see an object when looking through a periscope?

a)

It contains mirrors that reflect the object.

b)

It magnifies small objects so they can be seen.

c)

It absorbs the light rays passing through it.

d)

It separates the light into different colors.

93.

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

a)

Scattering

b)

Refraction

c)

Absorption

d)

Reflection

94.

Figure 3 demonstrates

a)

Refraction

b)

Reflection

c)

Light travels in a straight line

d)

Rewind

95.

Refractions will cause the object to look

a)

the same

b)

smaller & straight

c)

larger & bent

d)

a different color

96.
Which color happens when all colors of light are reflected?
a)
yellow
b)
white
c)
black
d)
red
97.
What color happens when all colors are absorbed ?
a)
blue
b)
black
c)
red
d)
white
98.
What property of light is represented by the picture?
a)
reflection
b)
diffraction
c)
refraction
d)
absorption
99.

Which surface would reflect light the best?

a)

light coloured and smooth

b)

dark coloured and smooth

c)

dark coloured and rough

100.
If you wanted a gift to be a surprise, what kind of container would you put it in?
a)
transparent
b)
thick
c)
opaque
d)
translucent
101.
What is being blocked when a shadow is formed?
a)
Light Source
b)
Light Path
c)
Object
d)
Eye
102.
Why does an apple appear red?
a)
All colors are absorbed & none are reflected
b)
All colors are absorbed except for blue, which is reflected
c)
All colors are reflected and none are absorbed
d)
All colors are absorbed except for red, which is reflected
103.
How does light travel
a)
It curves around corners
b)
Really slow
c)
In a straight line
d)
In circles
104.

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

a)

Scattering

b)

Refraction

c)

Absorption

d)

Reflection

105.
Law of reflection state that - The angle of incidence is .................. to the angle of reflection.
a)
equal
b)
double
c)
half
106.

Which of the following is a source of light

a)

Eye

b)

Mirror

c)

Fire

d)

the moon

107.

When light bounces of a mirror,it is

a)

Reflected

b)

Corrected

c)

Absorbed

d)

Refracted

108.

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

109.

Example of a luminous object

a)

Sun

b)

Moon

c)

Pencil

d)

Wall

110.
Light is a kind of.....
a)
reflection
b)
energy
c)
heat
d)
matter
111.
What does it mean to absorb?
a)
to take in without motion
b)
clear or easy to see through
c)
a type of energy that makes things visible
d)
allowing light but not detail to pass through
112.
What is light?
a)
clear or easy to see through
b)
to put forth or send out
c)
a type of energy that makes things visible
d)
a transparent crystal used to separatelight
113.
What is a prism?
a)
a dark unlit shape caused by blocked light
b)
property of light seen as different hues
c)
curving or arched inward
d)
a transparent crystal used to separate light
114.
What does it mean to refract?
a)
to bend something, almost always light
b)
clear or easy to see through
c)
a polished surface which reflects an image
d)
allowing light but not detail to pass through
115.
What is a lens?
a)
transparent material for focusing light
b)
a transparent crystal used to separate light
c)
band of colored lights
d)
able to be seen
116.
What does it mean to be opaque?
a)
to put forth or send out
b)
to take in without motion
c)
unable to see through
d)
transparent material for focusing light
117.
What does it mean to reflect?
a)
a polished surface which reflects an image
b)
a transparent crystal used to separate light
c)
to form or reproduce an image by mirroring  it
d)
to bend something, almost always light
118.
What does it mean to be translucent?
a)
curving or arched inward
b)
to put forth or send out
c)
allowing light but not detail to pass through
d)
to bend something, almost always light
119.
What is a shadow?
a)
to form or reproduce an image by mirroring it
b)
transparent material for focusing light
c)
a type of energy that makes things visible
d)
a dark unlit shape caused by blocked light
120.
What does it mean to be transparent?
a)
a dark unlit shape caused by blocked light
b)
to take in without motion
c)
the tone or color of the skin
d)
clear or easy to see through
121.
What is color?
a)
curving or arched outward
b)
band of colored lights
c)
property of light seen as different hues
d)
the tone or color of the skin
122.
What does it mean to be concave?
a)
a dark unlit shape caused by blocked light
b)
band of colored lights
c)
a type of energy that makes things visible
d)
curving or arched inward
123.
What does it mean to be convex?
a)
allowing light but not detail to pass through
b)
unable to see through
c)
curving or arched outward
d)
a transparent crystal used to separate light
124.
What is a laser?
a)
a device for creating a narrow beam of light
b)
unable to see through
c)
red skin irritation from solar radiation
d)
curving or arched outward
125.
What is pigment?
a)
the tone or color of the skin
b)
red skin irritation from solar radiation
c)
a polished surface which reflects an image
d)
unable to see through
126.
What is a spectrum?
a)
able to be seen
b)
property of light seen as different hues
c)
band of colored lights
d)
a transparent crystal used to separate light
127.
What is a sunburn?
a)
band of colored lights
b)
red skin irritation from solar radiation
c)
clear or easy to see through
d)
allowing light but not detail to pass through
128.
What does it mean to be visible?
a)
band of colored lights
b)
able to be seen
c)
to form or reproduce an image by mirroring it
d)
the tone or color of the skin
129.
What is a mirror?
a)
property of light seen as different hues
b)
to bend something, almost always light
c)
transparent material for focusing light
d)
a polished surface which reflects an image
130.
What does it mean to emit?
a)
curving or arched outward
b)
to form or reproduce an image by mirroring it
c)
to put forth or send out
d)
a transparent crystal used to separate light
131.

Which of the following objects is a light source?

a)
b)
c)

both A and B

132.

Which of the following materials will let light pass through?

a)
b)
c)
133.

When you place an object behind a glass you.......

a)

can see the object clearly

b)

cannot see the object clearly

c)

cannot see the object

134.

Which object is transparent?

a)
b)
c)
135.

Different amounts of light can pass through materials?

a)

True

b)

False

136.

Which object is translucent?

a)
b)
c)
137.

Look at the pictures below. Which picture shows a source of natural light?

a)
b)
c)
138.

Look at the pictures below. Which picture shows a man-man light source?

a)
b)
c)
139.

What picture shows a shadow?

a)
b)
c)
140.

If you want to look at your very own shadow, what should you do?

a)

I should stand in front of a light source.

b)

I should stand behind a light source.

c)

I should sit behind a light source.

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