Light Shadows and Reflections Test

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Light Shadows and Reflections Test - 5

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following statements is NOT true regarding shadows?

A
A shadow gives only the outline of that object.

B
Shadows are formed due to the blocking of light by an opaque object.

C
Images are similar to shadows.

D
A shadow formed is always on the opposite side of the light source.

Solution

Images are not similar to shadows.
Question 2
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At what time will the shadow cast by a pole under the sun be the shortest?

A
8.30a.m.

B
10.00a.m.

C
12 noon

D
5.00p.m.

Solution

The shadow cast by a pole under the sun will be the shortest at 12 noon.
Question 3
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The moon is a non-luminous object but still it is visible to us. Why?

A
The moonlight travels only in the form of rays.

B
The moon reflects the light falling on it from the sun.

C
The moonlight emits visible light.

D
The moonlight travels in curved paths.

Solution

The moon is a non-luminous object but it reflects the light falling on it from the sun.
Question 4
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Identify the incorrect statement from the following.

A
Shadows always give us the information about the shape of the object.

B
Images are different from shadows.

C
A plane mirror changes the direction of light that falls on it.

D
The moon is a non-luminous source of light.

Solution

Shadows do not give us the complete information about the shape of the object as sometimes they can mislead us with the shape of the object of an animal or a certain figure.
Question 5
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Rahul places a candle in front of three cardboards each with a hole on them and observes on the other side. What inference does he make from the given experiment?

A
Light rays are very thin.

B
Light rays travel in straight lines.

C
The eye can only see a luminous body.

D
A beam of light is made up of a lot of light rays.

Solution

Rahul is able to observe the candle as the holes in the pieces of cardboard are in a straight line. Light rays always travel in a straight line. He is able to see the candle due to rectilinear propagation of light.
Question 6
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Which of these materials can cast a shadow?

A
A clear glass

B
A clean cellophane paper

C
Clear water

D
A piece of wood

Solution

A piece of wood is opaque and can cast a shadow.
Question 7
1 / -0

An artificial source of light is

A
the sun.

B
a firefly.

C
the star.

D
an electric bulb.

Solution

An artificial source of light is an electric bulb.

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Re-Attempt Weekly Quiz Competition

Light Shadows and Reflections Test - 5

Result

Light Shadows and Reflections Test - 5

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SHARING IS CARING

Question 1

A shadow gives only the outline of that object.

Shadows are formed due to the blocking of light by an opaque object.

Images are similar to shadows.

A shadow formed is always on the opposite side of the light source.

Solution

Question 2

8.30a.m.

10.00a.m.

12 noon

5.00p.m.

Solution

Question 3

The moonlight travels only in the form of rays.

The moon reflects the light falling on it from the sun.

The moonlight emits visible light.

The moonlight travels in curved paths.

Solution

Question 4

Shadows always give us the information about the shape of the object.

Images are different from shadows.

A plane mirror changes the direction of light that falls on it.

The moon is a non-luminous source of light.

Solution

Question 5

Light rays are very thin.

Light rays travel in straight lines.

The eye can only see a luminous body.

A beam of light is made up of a lot of light rays.

Solution

Question 6

A clear glass

A clean cellophane paper

Clear water

A piece of wood

Solution

Question 7

the sun.

a firefly.

the star.

an electric bulb.

Solution

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