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Question (31)

QN005943

A disturbance in a medium moves with a speed of 340 m/s. How far will it travel in 0.5 s?

(A) 85 m
(B) 170 m
(C) 340 m
(D) 680 m

Correct Answer: B

Explanation:

Distance = 340 × 0.5 = 170 m

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Question (32)

QN005944

Sound travels through a solid rod of length 2500 m in 0.5 s. Its speed in the rod is

(A) 1250 m/s
(B) 2500 m/s
(C) 5000 m/s
(D) 7500 m/s

Correct Answer: C

Explanation:

Speed = 2500/0.5 = 5000 m/s

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Question (33)

QN005945

If sound travels 1700 m in 5 s through air, the speed of sound is

(A) 170 m/s
(B) 300 m/s
(C) 340 m/s
(D) 500 m/s

Correct Answer: C

Explanation:

Speed = 1700/5 = 340 m/s

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Question (34)

QN005946

A sound wave travels 7500 m through water in 5 s. Calculate the speed.

(A) 340 m/s
(B) 750 m/s
(C) 1500 m/s
(D) 5000 m/s

Correct Answer: C

Explanation:

Speed = 7500/5 = 1500 m/s

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Question (35)

QN005947

If sound covers 1360 m in air in 4 s, the speed of sound is

(A) 320 m/s
(B) 330 m/s
(C) 340 m/s
(D) 350 m/s

Correct Answer: C

Explanation:

Speed = 1360/4 = 340 m/s

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Question (36)

QN005948

A student hears scratching through a desk more clearly because sound travels

(A) only through solids
(B) faster and efficiently through solids
(C) slower through solids
(D) without vibrations in solids

Correct Answer: B

Explanation:

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Question (37)

QN005949

Which of the following correctly matches the wave with its type?

(A) Sound wave – transverse
(B) Light wave – longitudinal
(C) Sound wave – longitudinal
(D) Seismic wave – only transverse

Correct Answer: C

Explanation:

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Question (38)

QN005950

Which statement about sound propagation is correct?

(A) Matter flows from source to listener
(B) Only energy is transferred through the medium
(C) Medium travels with sound
(D) Compressions remain fixed

Correct Answer: B

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Question (39)

QN005951

In the slinky model, closely packed turns represent

(A) rarefactions
(B) nodes
(C) compressions
(D) amplitudes

Correct Answer: C

Explanation:

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Question (40)

QN005952

In the slinky model, spread-out turns represent

(A) rarefactions
(B) wavelengths
(C) compressions
(D) echoes

Correct Answer: A

Explanation:

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Question (31)

A disturbance in a medium moves with a speed of 340 m/s. How far will it travel in 0.5 s?

Explanation:

Link:

Question (32)

Sound travels through a solid rod of length 2500 m in 0.5 s. Its speed in the rod is

Explanation:

Link:

Question (33)

If sound travels 1700 m in 5 s through air, the speed of sound is

Explanation:

Link:

Question (34)

A sound wave travels 7500 m through water in 5 s. Calculate the speed.

Explanation:

Link:

Question (35)

If sound covers 1360 m in air in 4 s, the speed of sound is

Explanation:

Link:

Question (36)

A student hears scratching through a desk more clearly because sound travels

Explanation:

Link:

Question (37)

Which of the following correctly matches the wave with its type?

Explanation:

Link:

Question (38)

Which statement about sound propagation is correct?

Explanation:

Link:

Question (39)

In the slinky model, closely packed turns represent

Explanation:

Link:

Question (40)

In the slinky model, spread-out turns represent

Explanation:

Link:

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