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Question (21)

QN00561

Which of the following cannot produce a shadow?

(A) Clear air
(B) Wooden block
(C) Thick book
(D) Steel plate

Correct Answer: A

Explanation:

Clear air allows light to pass through completely.

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Question (22)

QN00562

A student notices that the shadow of a pole is shortest at noon. This is because the Sun is

(A) near the horizon
(B) directly overhead or nearly overhead
(C) absent in the sky
(D) behind the pole

Correct Answer: B

Explanation:

At noon the Sun is high in the sky.

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Question (23)

QN00563

A shadow formed by candlelight becomes longer when the candle is placed

(A) higher above the object
(B) very near the ground
(C) behind the screen
(D) inside a box

Correct Answer: A

Explanation:

Higher light positions create longer shadows.

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Question (24)

QN00564

Which factor does NOT affect the formation of a shadow?

(A) Position of light source
(B) Type of object
(C) Distance between object and screen
(D) Colour of the light source holder

Correct Answer: D

Explanation:

Holder colour does not affect shadow formation.

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Question (25)

QN00565

During a solar eclipse, the Moon acts as an

(A) transparent object
(B) opaque object blocking sunlight
(C) luminous object
(D) translucent object

Correct Answer: B

Explanation:

The Moon blocks sunlight during a solar eclipse.

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Question (26)

QN00566

A student places a coin between a torch and a screen. The shadow formed is circular because the coin is

(A) luminous
(B) transparent
(C) circular in shape
(D) reflective only

Correct Answer: C

Explanation:

Shadow shape depends on object shape.

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Question (27)

QN00567

Which statement about shadows and images is correct?

(A) Shadows show colour details
(B) Images always form shadows
(C) Shadows only show outline shapes
(D) Shadows are always smaller than objects

Correct Answer: C

Explanation:

Shadows mainly show outlines.

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Question (28)

QN00568

A child uses hand shadows to create bird shapes on a wall. This activity mainly demonstrates

(A) reflection of light
(B) blocking of light by opaque objects
(C) bending of light
(D) splitting of light

Correct Answer: B

Explanation:

Shadows form when hands block light.

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Question (29)

QN00569

If a screen is removed during a shadow experiment, the shadow

(A) becomes coloured
(B) cannot be observed clearly
(C) becomes brighter
(D) turns into an image

Correct Answer: B

Explanation:

A screen is needed to observe the shadow properly.

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Question (30)

QN00570

Which object is most suitable for producing a faint shadow?

(A) Clear glass sheet
(B) Metal spoon
(C) Wooden block
(D) Steel box

Correct Answer: A

Explanation:

Clear glass allows most light to pass through.

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Question (21)

Which of the following cannot produce a shadow?

Explanation:

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Question (22)

A student notices that the shadow of a pole is shortest at noon. This is because the Sun is

Explanation:

Link:

Question (23)

A shadow formed by candlelight becomes longer when the candle is placed

Explanation:

Link:

Question (24)

Which factor does NOT affect the formation of a shadow?

Explanation:

Link:

Question (25)

During a solar eclipse, the Moon acts as an

Explanation:

Link:

Question (26)

A student places a coin between a torch and a screen. The shadow formed is circular because the coin is

Explanation:

Link:

Question (27)

Which statement about shadows and images is correct?

Explanation:

Link:

Question (28)

A child uses hand shadows to create bird shapes on a wall. This activity mainly demonstrates

Explanation:

Link:

Question (29)

If a screen is removed during a shadow experiment, the shadow

Explanation:

Link:

Question (30)

Which object is most suitable for producing a faint shadow?

Explanation:

Link:

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