MHT CET 2023 Physics question
A wire PQ has length 4.8 m and mass 0.06 kg. Another wire QR has length 2.56 m and mass 0.2 kg. Both wire have same radii and are joined as a single wire. This wire is under tension on 80 N. A wave pulse of amplitude 3.5 cm is sent along the wire PQ from end P. The time taken by the wave to reach the other end of single wire is
(No power is dissipated during propagation)
Answer: (C)
Solution
The wave speed in a stretched wire is , with the mass per unit length, and the tension is the same (80 N) in both parts. Wire PQ: kg/m, so m/s, and s. Wire QR: $μ_2 =
See the full step-by-step solution
Create a free account to read the complete working, and practise questions like this in a timed test.
Create a free account