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A composition string is made up by joini...

A composition string is made up by joining two strings of different masses per unit length 1g/ m and 4 g/m. The composite string is under the same tension. A transverse wave pulse : Y = (6 mm) sin(5t + 40x), where it is in seconds and 'x' in meters, is sent along the lighter string towards the joint. The joint is at x = 0. The equation of the wave pulse reflected from the joint is

A

(2 mm) sin(5t - 40x)

B

(4 mm) sin(40 x - 5t)

C

`-(2 mm) sin(5t - 40x)`

D

(2 mm) sin (5t - 10a)

Text Solution

Verified by Experts

The correct Answer is:
C
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