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MHT CET Physics question

PhysicsWavesMHT CET

If two tuning forks A and B are sounded together they produce 4 beats per second. A is then slightly loaded with wax they produce 2 beats when sounded again. The frequency of A is 256 Hz. The frequency of B will be:

Answer: (B)

Solution

; loading lowers and the beats fall from 4 to 2, so moved closer to , meaning

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Question ID VK-070008