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 wh

Question

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 beNEET 2011 (Mains)

TestHub · Accepted Answer

According to law of tension the frequency of the string varies directly as the square root of its tension or n n Δ n ​ T Δ T ​ T Δ T ​ ​ ∝ T ​ = 2 1 ​ ⋅ T Δ T ​ = 2 × n Δ n ​ = 2 × 600 6 ​ = 0.02 ​

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