A wave moving with constant speed on a uniform string passes the point `x=0` with amplitude `A_0`, angular frequency `omega_0` and average rate of energy transfer `P_0`. As the wave travels down the string it gradually loses energy and at the point `x=l`, the average rate of energy transfer becomes`P_0`/2. At the point `x=l`. Angular frequency and amplitude are respectively:

Options

A. ` omega_0 and A_0//sqrt(2)`
B. `omega_0 //sqrt(y)=A sin (omegat+kx). And A_0`
C. `"less than " omega_0 and A_0`
D. `omega_0//sqrt(2) and A_0 //sqrt(2)`

Answer

A