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Question (1)

QN00691

Which useful item can be made using reflection from plane mirrors?

(A) Thermometer
(B) Kaleidoscope
(C) Magnet
(D) Compass

Correct Answer: B

Explanation:

Kaleidoscope works using reflection from mirrors.

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Question (2)

QN00692

A kaleidoscope produces beautiful patterns mainly due to

(A) refraction of light
(B) multiple reflections
(C) shadow formation
(D) absorption of light

Correct Answer: B

Explanation:

Multiple reflections create repeated patterns.

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Question (3)

QN00693

Which material is commonly used inside a kaleidoscope to reflect light?

(A) Rough cardboard
(B) Plane mirrors
(C) Transparent plastic
(D) Cotton cloth

Correct Answer: B

Explanation:

Plane mirrors reflect light effectively.

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Question (4)

QN00694

A periscope allows a person to see

(A) microscopic objects
(B) objects around corners or above obstacles
(C) only distant stars
(D) underground water

Correct Answer: B

Explanation:

Periscopes help observe objects not directly visible.

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Question (5)

QN00695

Which principle is mainly used in a periscope?

(A) Reflection of light
(B) Refraction of light
(C) Dispersion of light
(D) Absorption of light

Correct Answer: A

Explanation:

Periscopes work using reflection.

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Question (6)

QN00696

A simple periscope generally contains

(A) two lenses
(B) one mirror
(C) two plane mirrors
(D) one prism only

Correct Answer: C

Explanation:

Two mirrors are used to reflect light.

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Question (7)

QN00697

In a kaleidoscope, mirrors are usually inclined at an angle of

(A) 30°
(B) 45°
(C) 60°
(D) 90°

Correct Answer: C

Explanation:

Mirrors are commonly placed at 60°.

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Question (8)

QN00698

Which of the following objects is used inside a kaleidoscope to create colourful patterns?

(A) Sand particles
(B) Pieces of coloured glass
(C) Iron nails
(D) Wooden blocks

Correct Answer: B

Explanation:

Coloured glass pieces form decorative patterns.

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Question (9)

QN00699

A student rotates a kaleidoscope and observes changing designs because

(A) the mirrors move positions
(B) coloured objects change arrangement
(C) light gets absorbed
(D) the tube changes length

Correct Answer: B

Explanation:

Rotating changes the arrangement of coloured pieces.

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Question (10)

QN00700

Which statement correctly defines a periscope?

(A) A device used to magnify tiny objects
(B) A device used to see objects not directly visible
(C) A device used to split white light
(D) A device used to measure heat

Correct Answer: B

Explanation:

Periscopes help view hidden objects.

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Question (1)

Which useful item can be made using reflection from plane mirrors?

Explanation:

Link:

Question (2)

A kaleidoscope produces beautiful patterns mainly due to

Explanation:

Link:

Question (3)

Which material is commonly used inside a kaleidoscope to reflect light?

Explanation:

Link:

Question (4)

A periscope allows a person to see

Explanation:

Link:

Question (5)

Which principle is mainly used in a periscope?

Explanation:

Link:

Question (6)

A simple periscope generally contains

Explanation:

Link:

Question (7)

In a kaleidoscope, mirrors are usually inclined at an angle of

Explanation:

Link:

Question (8)

Which of the following objects is used inside a kaleidoscope to create colourful patterns?

Explanation:

Link:

Question (9)

A student rotates a kaleidoscope and observes changing designs because

Explanation:

Link:

Question (10)

Which statement correctly defines a periscope?

Explanation:

Link:

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