A metal wire of diameter 1 mm is held on two knife edges separated by a distance of 50…
Physics · JEE Advanced · NTA Exams — Oscillations and Waves
A metal wire of diameter 1 mm is held on two knife edges separated by a distance of 50 cm. The tension in the wire is 100 N. The wire vibrating with its fundamental frequency and a vibrating tuning fork together produce 5 beats per second. The tension in the wire is then reduced to 81 N. When the two are excited, beats are heard at the same rate. What is the frequency of the fork?
- 90 Hz
- 95 Hz
- 100 Hz
- 105 Hz
Answer
(B) 95 Hz
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