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MHT CET Physics question

PhysicsWavesMHT CET

Two tuning forks A and B produce 8 beats per second when sounded together. When B is slightly loaded with wax, the beats are reduced to 4 per second. If the frequency of A is 512 Hz, the frequency of B is

Answer: (D)

Solution

is 520 Hz or 504 Hz; loading with wax lowers , which reduces the beats only if was 520 Hz (falling to

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Question ID VK-070191