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Due to moisture in the air, the speed of sound:

Correct answer: B. Decreases

  • A. Increases
  • B. Decreases
  • C. Remains the same
  • D. May increase or decrease

Explanation

Due to moisture in the air, the speed of sound decreases. This is because sound travels faster in dry air compared to moist air. The presence of moisture increases the density of the air, which slows down the speed of sound.Incorrect Options:Option (a) Increases: This is incorrect because moisture in the air typically decreases the speed of sound.Option (c) Remains the same: This is incorrect because the presence of moisture affects the speed of sound.Option (d) May increase or decrease: This is incorrect because the effect of moisture is generally to decrease the speed of sound.

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Progressive waves transfer energy through oscillations, with wavelength, frequency, amplitude and wave speed related by v = fλ; sound speed depends on the medium. Superposition produces interference and stationary waves in strings and organ pipes, while simple harmonic motion describes the oscillation itself and must be distinguished from wave propagation.

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