Two identical piano wires have a fundamental frequency of 600 vib/sec, when kept under the same tension . What fractional increase in the tension of one wire will lead to the occurrence of six beats per second when both wires vibrate simultaneously.
Text Solution
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(2 %)
f = 
λ n f = – λ nλ + 
λ n T – 
λ nλ
= 0 + 
– 0
= 
= 
= 
= 
% change = 
× 100 = 2%
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