A long wire PQR is made by joining two wires PQ and QR of equal radii. PQ has length 4.8 m and mass 0.06 kg. QR has length 2.56 m and mass 0.2 kg. The wire PQR is under a tension of 80 N. A sinusoidal wave-pulse of amplitude 3.5 cm is sent along the wire PQ from the end P. No power is dissipated during the propagation of the wave-pulse. CalculateA) the time taken by the wave -pulse to reach the other end R of the wire andB) the amplitude of the reflected and transmitted wave pulses after the incident wave pulse cross thejoint Q.

A long wire PQR is made by joining two wires PQ and QR of equal radii.

1.	A long wire PQR is made by joining two wires PQ and QR of equal radii. PQ has length 4.8 m and mass 0.06 kg. QR has length 2.56 m and mass 0.2 kg. The wire PQR is under a tension of 80 N. A sinusoidal wave-pulse of amplitude 3.5 cm is sent along the wire PQ from the end P. No power is dissipated during the propagation of the wave-pulse. CalculateA) the time taken by the wave -pulse to reach the other end R of the wire andB) the amplitude of the reflected and transmitted wave pulses after the incident wave pulse cross thejoint Q.
Answer» 0.14 s, 1.5 CM, 2 cm 0.3 s, 1.2 cm, 2 cm 0.4 s, 1.3 cm, 1 cm 0.2 s, 1.1 cm, 3 cm Answer :A

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