A sound wave has time period 0.01 s. Its frequency is MCQ with Answer and Explanation

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A sound wave has time period 0.01 s. Its frequency is

A. 100 Hz

B. 0.1 Hz

C. 10 Hz

D. 1000 Hz

Answer: Option A

Solution (By JKSSB Mock Tests)

f = 1/T = 1/0.01 = 100 Hz.

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Question #1

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The energy source of the Sun is

A. Chemical reaction

B. Nuclear fusion

C. Nuclear fission

D. Gravitational collapse

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Correct Answer: Option B

Explanation:
Hydrogen fusion to helium releases energy.

This question belongs to: Science Physics

Question #2

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Beats observable when frequencies are:

A. Any values

B. Slightly different

C. Identical

D. Very different

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Correct Answer: Option B

Explanation:
Beats: interference of close frequencies (Δf small, typically

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Question #3

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Frequency of sound wave determines:

A. Loudness

B. Speed

C. Timbre

D. Pitch

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Correct Answer: Option D

Explanation:
Frequency → pitch perception: higher frequency = higher pitch. Loudness depends on amplitude; timbre on waveform; speed on medium properties. Memory aid: 'Frequency = pitch; Amplitude = loudness'. Basic sound property question frequently tested to verify perceptual attribute associations in competitive exams.

This question belongs to: Science Physics

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