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Question (11)

QN005923

A region of higher density in a sound wave is called

(A) trough
(B) rarefaction
(C) compression
(D) crest

Correct Answer: C

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Question (12)

QN005924

A region of lower density in a sound wave is called

(A) amplitude
(B) rarefaction
(C) compression
(D) wavelength

Correct Answer: B

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Question (13)

QN005925

The disturbance consisting of alternating compressions and rarefactions is called

(A) electromagnetic wave
(B) light pulse
(C) sound wave
(D) heat wave

Correct Answer: C

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Question (14)

QN005926

In a longitudinal wave, particles vibrate

(A) perpendicular to wave direction
(B) parallel to wave direction
(C) randomly in all directions
(D) in circular paths

Correct Answer: B

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Question (15)

QN005927

Sound waves are classified as

(A) transverse electromagnetic waves
(B) longitudinal mechanical waves
(C) transverse mechanical waves
(D) stationary waves

Correct Answer: B

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Question (16)

QN005928

Mechanical waves require

(A) sunlight
(B) vacuum
(C) a material medium
(D) magnetic field

Correct Answer: C

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Question (17)

QN005929

Which of the following is NOT a mechanical wave?

(A) Sound wave
(B) Seismic wave
(C) Light wave
(D) Longitudinal wave in slinky

Correct Answer: C

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Question (18)

QN005930

In transverse waves, particles vibrate

(A) parallel to propagation
(B) perpendicular to propagation
(C) only horizontally
(D) only vertically

Correct Answer: B

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Question (19)

QN005931

When the piston in a tube moves forward, it creates

(A) rarefaction
(B) vacuum
(C) compression
(D) echo

Correct Answer: C

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Question (20)

QN005932

When the piston in a tube moves backward, it creates

(A) crest
(B) compression
(C) rarefaction
(D) node

Correct Answer: C

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Question (11)

A region of higher density in a sound wave is called

Explanation:

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Question (12)

A region of lower density in a sound wave is called

Explanation:

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Question (13)

The disturbance consisting of alternating compressions and rarefactions is called

Explanation:

Link:

Question (14)

In a longitudinal wave, particles vibrate

Explanation:

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Question (15)

Sound waves are classified as

Explanation:

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Question (16)

Mechanical waves require

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Question (17)

Which of the following is NOT a mechanical wave?

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Question (18)

In transverse waves, particles vibrate

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Question (19)

When the piston in a tube moves forward, it creates

Explanation:

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Question (20)

When the piston in a tube moves backward, it creates

Explanation:

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