Light Shadows and Reflections Test

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Light Shadows and Reflections Test - 4

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Weekly Quiz Competition

Question 1
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What happens when light falls on a wooden chair?

A
A part of the light reflected from the chair enters our eyes.

B
Light passes through the wooden chair.

C
The chair sends a signal to our eyes that enables us to see it.

D
Electrical energy is given out by the chair.

Solution

Chair is an opaque object. Opaque objects completely stop light from passing through them. When light falls on a wooden chair, a part of the light gets reflected from the chair and enters our eyes.
Question 2
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Which of the following materials can transmit most of the light?

A
A glass block

B
A piece of blank paper

C
A spot of black ink

D
A placid lake surface

Solution

A glass block is a transparent substance which allows the maximum amount of light to pass through it.
Question 3
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A torch is shone onto a star-shaped card which forms a shadow on the screen behind the card. {{B 1001}} What will happen to the shadow if the torch is moved away from the card?

A
It decreases in size.

B
It increases in size.

C
It first becomes smaller and then again becomes larger.

D
It changes its shape.

Solution

As the source of light moves away from the object/the size of the shadow on the screen decreases.
Question 4
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We are able to see the objects around us because

A
the objects absorb all the light.

B
the light reflected from the eyes reaches the object.

C
the light reflected from the objects enters our eyes.

D
light can be refracted.

Solution

We are able to see the objects around us because the light reflected from the objects enters our eyes.
Question 5
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In the morning, when the sun rises in the east, your shadow will be seen on the

A
east.

B
north.

C
west.

D
south.

Solution

In the morning, when the sun rises in the east, your shadow will be seen on the west, i.e. on the opposite side.
Question 6
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A light source is incident on an object 'P'. If a dark coloured shadow of the object is cast on the screen, then which of the following could'?' be?

A
An iron ball

B
A piece of glass

C
A wax coated paper

D
A transparent plastic sheet

Solution

When an iron ball is placed in the path of a source of light, its dark shadow is cast on the screen, because the iron ball is an opaque object which blocks the passage of light.
Question 7
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Which of the following statements about shadows is Incorrect!

A
The shadow of an object is formed on the opposite side of the light source.

B
The position of the shadow changes with the position of the light source.

C
The position of the shadow changes with the movement of the object.

D
A transparent body produces a shadow.

Solution

A transparent body does not produce a shadow. Shadows are formed by opaque bodies.

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Re-Attempt Weekly Quiz Competition

Light Shadows and Reflections Test - 4

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Light Shadows and Reflections Test - 4

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SHARING IS CARING

Question 1

A part of the light reflected from the chair enters our eyes.

Light passes through the wooden chair.

The chair sends a signal to our eyes that enables us to see it.

Electrical energy is given out by the chair.

Solution

Question 2

A glass block

A piece of blank paper

A spot of black ink

A placid lake surface

Solution

Question 3

It decreases in size.

It increases in size.

It first becomes smaller and then again becomes larger.

It changes its shape.

Solution

Question 4

the objects absorb all the light.

the light reflected from the eyes reaches the object.

the light reflected from the objects enters our eyes.

light can be refracted.

Solution

Question 5

east.

north.

west.

south.

Solution

Question 6

An iron ball

A piece of glass

A wax coated paper

A transparent plastic sheet

Solution

Question 7

The shadow of an object is formed on the opposite side of the light source.

The position of the shadow changes with the position of the light source.

The position of the shadow changes with the movement of the object.

A transparent body produces a shadow.

Solution

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