JEE MAIN - Physics (2023 - 1st February Morning Shift - No. 8)
A steel wire with mass per unit length $$7.0 \times 10^{-3} \mathrm{~kg} \mathrm{~m}^{-1}$$ is under tension of $$70 \mathrm{~N}$$. The speed of transverse waves in the wire will be:
$$10 \mathrm{~m} / \mathrm{s}$$
$$50 \mathrm{~m} / \mathrm{s}$$
$$100 \mathrm{~m} / \mathrm{s}$$
$$200 \pi\mathrm{~m} / \mathrm{s}$$
Explication
Speed of transverse wave $=\sqrt{\frac{T}{\mu}}$ $=\sqrt{\frac{70}{7 \times 10^{-3}}}=100 \mathrm{~m} / \mathrm{s}$