What is the effect of humidity on the speed of sound in air?

Type: MCQ • Marks: 1

A. Humidity slows sound down drastically

B. Humidity has zero effect

C. Moist air stops sound

D. Moist air has lower density than dry air, causing sound to travel slightly faster in humid air

Explanation

Water vapor molecules reduce average air density, slightly increasing acoustic velocity.

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Class 9th Science (MCQ)

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