When two waves of the same frequency and same amplitude ‘a’ are superposed in phase, the resulting intensity at the point of superposition is proportional to

Can two waves of the same frequency and amplitude travelling in the same direction give rise to a stationary wave after superposition ?

When two waves with same frequency and constant phase differenc interfere,

When two waves with same frequency and constant phase differenc interfere,

If the two waves of the same frequency and same amplitude, on superposition produce a resultant disturbance of the same amplitude, then the phase difference between the two arriving wave will be

If two waves of same frequency and same amplitude superimpose and produce third wave of same amplitude, then waves differ in phase by –

Two sinusoidal waves of intensity I having same frequency and same amplitude interferes constructively at a point. The resultant intensity at a point will be

Two waves of same frequency but of amplitude a and 2a respectively superimpose over each other. The intensity at a point where the phase difference is $\frac{3\pi }{2}$, will be proportional to :

Two waves of the same frequency and intensity superimpose with each other in opposite phases .Then after superposition the

Two waves of same frequency and intensity superimpose with each other in opposite phases, then after superposition the

Two waves of the same frequency and same amplitude 'a' are reaching a point simultaneously. What should be the phase difference between the waves so that the amplitude of the resultant wave be :
(i) 2a (ii) $\sqrt{2}a$ (iii) a (iv) zero.