Questions
When a tuning fork A of unknown frequency is sounded with another tuning fork B of frequency 256 Hz, then 3 beats per second are observed. After that A is loaded with wax and sounded, the again 3 beats per second are observed. The frequency of the tuning fork A is
detailed solution
Correct option is C
It is given that nA = Unknown frequency = ?nB = Known frequency = 256 Hzx = 3 bps, which remains same after loading Unknown tuning fork A is loaded so nA↓Hence nA↓ – nB = x ... (i) → Correct nB – nA↓ = x ... (ii) → Wrong⇒ nA = nB + x = 256 + 3 = 259 Hz.Talk to our academic expert!
Similar Questions
A metal wire of diameter 1.5 mm is held on two knife edges separated by a distance 50 cm the tension in the wire is 100 N the wire vibrating with its fundamental frequency and vibrating tuning fork together produces 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. Calculate frequency of the fork.
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