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Solution


Q.

A steel wire with mass per unit length 7.0×10-3 kg m-1 is under tension of 70 N. The speed of transverse waves in the wire will be              [2023]
1 200π m/s  
2 100 m/s  
3 10 m/s  
4 50 m/s  

Ans.

(2)

v=Tμ=7070×10-3=100 m/s