Two identical travelling waves moving in the same direction are out of phase by `phi` radians. What is the amplitude of the combined wave in terms of the common amplitude A of the two combining waves?

Two identical sinusoidal waves are moving in the same direction along a stretched string, interfere with each other. The phase difference between them is 120^(@). The amplitudes of both the waves are same. If the amplitude of the resultant wave due to interfernce is 2mm, the amplitude of each wave is

If two waves with the amplitude of E_(0) each undergo constructive interference, the amplitude of the resulting wave is

(A): If two waves of same amplitude, produce a resultant wave of same amplitude, then the phase difference between them will be 120^(@) (R): The resultant amplitude of two waves is equal to sum of amplitude of two waves

Two harmonic travelling waves are described by the equations y_(1)=a sin(kx-omega t) and y_(2)=a sin(-kx+omega t+phi) . The amplitude of the superimposed wave is