Waves And Sound Question 8
Question 8 - 01 February - Shift 1
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:
(1) $200 \pi m / s$
(2) $100 m / s$
(3) $10 m / s$
(4) $50 m / s$
Show Answer
Answer: (2)
Solution:
Formula: Time period
$ v=\sqrt{\frac{T}{\mu}}=\sqrt{\frac{70}{70 \times 10^{-3}}}=100 m / s $
