Consider a travelling simple harmonic wave on a string of mass per unit length and tension T . Kinetic energy per unit length is given by u_k= 1 2 ( y t )^2 and potential energy per unit length is given by u_p= 1 2 T ( y x )^2 . Mark the CORRECT option(s).

Options

1. APower transmitted by wave equals ( u _ k + u _ p ) T .
2. Bu_k and u_p simultaneously attain their maximum and minimum values.
3. CTotal energy per unit length of a string is constant when a harmonic wave travels on it.
4. DA small part of string has maximum potential energy when it is at its equilibrium position.