First slide

Characterstics of wave

Question

A sinusoidal transverse wave is propagating in a string in which a tension is maintained. Then, potential energy stored per unit length is maximum at point

Moderate

A

A
B

B
C

C
D

D

Solution

Elastic potential energy stored per unit length is directly proportional to the square of strain produced in the string and strain produced in the string is proportional to the slope $\frac{\partial y}{\partial x}$ .
$\frac{\partial y}{\partial x}$ is maximum at point B.

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