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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

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

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