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MHT CET Physics question

PhysicsWavesMHT CET

Two tuning forks have frequencies 382 Hz and 384 Hz respectively. When they are sounded together, they produce maximum sound. How long will it take to hear the minimum sound?

Answer: (B)

Solution

The beat frequency is 2 Hz, so the beat period is 0.5 s and the sound changes from maximum to minimum in half of that,

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Question ID VK-070105