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NEET2011PhysicsWaves and SoundActual

Two identical piano wires kept under the same tension T have a fundamental frequency of 600 ~Hz . The fractional increase in the tension of one of the wires which will lead to occurrence of 6 beat/s when both the wires oscillate together would be

Options

  1. A0.02
  2. B0.03
  3. C0.04
  4. D0.01

Correct answer

A. 0.02

Step-by-step solution

According to law of tension the frequency of the string varies directly as the square root of its tension or aligned n & T n n & = 1 2 T T T T & =2 n n T T & =2 6 600 & =0.02 aligned

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