A segment of wire vibrates with a fundamental frequency of 450 Hz under a tension of 9 kg - wt . Then tension at which the fundamental frequency of the same wire becomes 900 Hz is

Question

A segment of wire vibrates with a fundamental frequency of 450 Hz under a tension of 9 kg - wt . Then tension at which the fundamental frequency of the same wire becomes 900 Hz is, 36 kg-wt, 27 kg-wt, 18 kg-wt, 72 kg-wt

MARKS App · Accepted Answer

Fundamental frequency of wire f = 1 2 π T m Or f ∝ T Or f 2 f 1 = T 2 T 1 Or 900 450 = T 2 9 Or T 2 = 4 × 9 = 36 kg - wt

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