Q6. Two strings produce beats of 7 Hz. One has a frequency of 392 Hz. When the tension in the second string is increased, the beat frequency becomes 5 Hz. What was the original frequency of the second string?
- A. 399 Hz
- B. 392 Hz
- C. 385 Hz
- D. 387 Hz
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Sign In FreeA string of length 1.2 m fixed at both ends has a wave speed of 48 m/s. What is the frequency difference between its fourth and second harmonics?
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