MHT CET 2023 Physics question
When two tuning forks are sounded together, 5 beats per second are heard. One of the forks is in unison with 0.97 m length of sonometer wire and the other is in unison with 0.96 m length of the same wire. The frequencies of the two tuning forks are
Answer: (D)
Solution
For the same wire (same tension and mass per unit length) the frequency is inversely proportional to the vibrating length: . The shorter wire (0.96 m) has the higher frequency, so , i.e. , giving and
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