Physics-Transverse & Longitudinal Waves

NEET Physics Transverse & Longitudinal Waves MCQ Question

Type: MCQ-numerical-Hard-Class 11

A string of length 1.2 m with a mass of 0.006 kg is under a tension of 80 N. What is the speed of transverse waves on this string?

A

115 m/s

B

130 m/s

C

145 m/s

D

160 m/s

Correct Answer

Option B

Detailed Explanation

The speed of transverse waves on a string is given by v=Tμv = \sqrt{\frac{T}{\mu}} where μ\mu is mass per unit length. Here, μ=0.0061.2  kg/m\mu = \frac{0.006}{1.2} \; kg/m. So, v=800.005130  m/sv = \sqrt{\frac{80}{0.005}} \approx 130 \; m/s.

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