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MHT CET Physics question

PhysicsWavesMHT CET

Two sound waves with wavelengths 5.0 m and 5.5 m respectively, each propagate in a gas with velocity 330 m/s. We expect the following number of beats per second

Answer: (B)

Solution

The frequencies are Hz and Hz, so the beat frequency is $66 -

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Question ID VK-070163