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What is the effect of humidity on sound waves when humidity increases?

Practice this Sound and Waves question from Engineering Entrance Exam.

Question Details

Easy

Physics Sound and Waves Engineering Entrance Exam

Question

What is the effect of humidity on sound waves when humidity increases?

Options

A

Speed of sound waves is more

Correct

B

Speed of sound waves is less

C

Speed of sound waves remains same

D

Speed of sound waves becomes zero

Solution

Velocity of sound \( = \sqrt {\frac{{\gamma RT}}{M}} \)

When water vapour are present in air, average molecular weight of air decreases and hence velocity increases.

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