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Question (1)

QN00541

Which of the following is necessary for the formation of a shadow?

(A) Only a screen
(B) Only a light source
(C) A light source, an opaque object, and a screen
(D) A transparent object only

Correct Answer: C

Explanation:

A shadow forms only when light is blocked by an opaque object on a screen.

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Question (2)

QN00542

A student places a book between a torch and a wall. A dark region appears on the wall because the book

(A) emits light
(B) reflects all light
(C) blocks light
(D) bends light completely

Correct Answer: C

Explanation:

Opaque objects block light and form shadows.

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Question (3)

QN00543

Which type of object forms the darkest shadow?

(A) Transparent object
(B) Translucent object
(C) Opaque object
(D) Luminous object

Correct Answer: C

Explanation:

Opaque objects block maximum light.

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Question (4)

QN00544

A shadow is formed on the side opposite to the

(A) screen
(B) object
(C) light source
(D) observer

Correct Answer: C

Explanation:

Shadows form opposite to the direction of the light source.

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Question (5)

QN00545

A student moves an opaque ball closer to a torch while keeping the screen fixed. The shadow becomes

(A) smaller
(B) larger
(C) coloured
(D) invisible

Correct Answer: B

Explanation:

Bringing the object closer to the light source enlarges the shadow.

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Question (6)

QN00546

Which statement about shadows is correct?

(A) Shadows have the same colour as the object
(B) Shadows are always circular
(C) Shadows are formed when light is blocked
(D) Shadows emit light

Correct Answer: C

Explanation:

A shadow forms when an object blocks light.

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Question (7)

QN00547

A translucent sheet placed between a torch and a screen produces a shadow that is

(A) completely dark
(B) lighter than that of an opaque object
(C) invisible
(D) brighter than the torch light

Correct Answer: B

Explanation:

Translucent objects allow some light to pass through.

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Question (8)

QN00548

Which material will not form a clear shadow?

(A) Metal plate
(B) Cardboard
(C) Frosted glass
(D) Wooden block

Correct Answer: C

Explanation:

Frosted glass is translucent and forms unclear shadows.

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Question (9)

QN00549

The size of a shadow depends mainly on the

(A) colour of the object
(B) distance between source, object, and screen
(C) smell of the object
(D) texture of the screen only

Correct Answer: B

Explanation:

Shadow size changes with distance.

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Question (10)

QN00550

A student holds a pencil very close to a wall while shining a torch from behind. The shadow formed will be

(A) larger than the pencil
(B) smaller than the pencil
(C) nearly the same size as the pencil
(D) invisible

Correct Answer: C

Explanation:

Shadows become nearly equal in size when the object is close to the screen.

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Question (1)

Which of the following is necessary for the formation of a shadow?

Explanation:

Link:

Question (2)

A student places a book between a torch and a wall. A dark region appears on the wall because the book

Explanation:

Link:

Question (3)

Which type of object forms the darkest shadow?

Explanation:

Link:

Question (4)

A shadow is formed on the side opposite to the

Explanation:

Link:

Question (5)

A student moves an opaque ball closer to a torch while keeping the screen fixed. The shadow becomes

Explanation:

Link:

Question (6)

Which statement about shadows is correct?

Explanation:

Link:

Question (7)

A translucent sheet placed between a torch and a screen produces a shadow that is

Explanation:

Link:

Question (8)

Which material will not form a clear shadow?

Explanation:

Link:

Question (9)

The size of a shadow depends mainly on the

Explanation:

Link:

Question (10)

A student holds a pencil very close to a wall while shining a torch from behind. The shadow formed will be

Explanation:

Link:

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