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 steel wire of length lm, mass 0.1 kg and uniform cross-sectional are

1.	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]
Answer» 21Hz 31Hz 11Hz 1Hz Answer :C

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