Q.

A string of 7 m length has a mass of 0.035 kg. If tension in the string is 60.5 N, then speed of a wave on the string is

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a

77 m/s

b

102 m/s

c

110 m/s

d

165 m/s

answer is C.

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Detailed Solution

v=Tm⇒v=60.5(0.035/7)=110m/s
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A string of 7 m length has a mass of 0.035 kg. If tension in the string is 60.5 N, then speed of a wave on the string is