The pitch of a sound depends on its MCQ with Answer and Explanation

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The pitch of a sound depends on its

A. Speed

B. Frequency

C. Amplitude

D. Wavelength

Answer: Option B

Solution (By JKSSB Mock Tests)

Pitch is subjective perception of frequency. Higher frequency higher pitch. Amplitude determines loudness. Speed and wavelength related by v = fλ, but pitch is frequency-based. Human ear 20 Hz-20 kHz.

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Practice More Physics Questions

Question #1

The mass of a proton is approximately how many times the mass of an electron?

A. 1836

B. 1000

C. 100

D. 10

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Correct Answer: Option A

Explanation:
Proton mass ≈ 1.67 × 10⁻²⁷ kg, electron ≈ 9.11 × 10⁻³¹ kg, ratio ≈ 1836. Neutron slightly heavier. Atomic mass concentrated in nucleus.

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Question #2

The efficiency of a machine is 80%. If it lifts a load of 500 N through 2 m, effort applied through 10 m. Effort is

A. 80 N

B. 200 N

C. 125 N

D. 100 N

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Correct Answer: Option C

Explanation:
Work output = 500×2=1000 J. Work input = output/eff = 1000/0.8=1250 J. Effort = Work input / distance = 1250/10 = 125 N.

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Question #3

Which color of light is scattered most by atmosphere?

A. Red

B. Blue

C. Yellow

D. Green

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Correct Answer: Option B

Explanation:
Rayleigh scattering ∝ 1/λ⁴. Blue has shorter wavelength, scattered more. Sky appears blue.

This question belongs to: Science Physics

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