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Questions  

A 5.5m  long string has a mass of 0.035kg . If the tension in the string is 77N , the speed of a wave on the string is

a
110 m/s
b
165 m/s
c
77 m/s
d
102 m/s

detailed solution

Correct option is A

Given , Length l=5.5 m Mass =0.035 kg Tension T=77 N Speed of the wave V=Tμ                               V=Tlm  (∵μ=ml)                                =77×5.535×10−3                               V=110 m/sec

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