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Q: Tuning fork A of frequency 384 Hz gives 6 beats per second when sounded with another tunning fork B. On loading B with a little wax, the number of beats per second becomes 4. Frequency of B is-
  • A. 390Hz
  • B. 388 Hz
  • C. 378 Hz
  • D. 380 Hz
Correct Answer: Option A -
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Explanations:

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