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A steel wire of length lm, mass 0.1 kg a...

A steel wire of length lm, mass 0.1 kg and uniform cross-sectional area `10^(-6)m^(2)` is rigidly fixed at both ends. The temperature of the wire is lowered by `20^(0)C`. If the transverse waves are set up by plucking the string in the middle, calculate the frequency of the fundamental mode of vibration `[Y=2xx10^(11)N//m^(2) and alpha=1.21xx10^(-5)l^(0)C]`

A

21Hz

B

31Hz

C

11Hz

D

1Hz

Text Solution

Verified by Experts

The correct Answer is:
C
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