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Q.

A steel wire with mass per unit length $7.0 \times 10^{- 3} kg m^{- 1}$ is under tension of $70 N$ . The speed of transverse waves in the wire will be:

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a

100 m/s

b

50 m/s

c

200 $π$ m/s

d

10 m/s

answer is B.

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Detailed Solution

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$\begin{array}{l} V = \sqrt{\frac{T}{μ}} \\ = \sqrt{\frac{70}{7 \times 10^{- 3}}} = 100 m / s \end{array}$

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