Waves Test - 30...

Two particles are executing $$S.H.M$$ of same amplitude and frequency along the same straight line path. They pass each other when going in opposite directions, each time their displacement is half of their amplitude. What is the phase difference between them?

The equation $$ y=A sin^2(kx-\omega t) $$ represents a wave with

The phenomenon of interference is shown by

The equation of a plane progressive wave is $$ y=0.9 sin 4\pi[t-\dfrac{x}{2}] $$. When it is reflected at a rigid support, its amplitude becomes $$\dfrac{2}{3} $$ of its previous value. The equation of the reflected wave is 

A series of ocean waves, each 5.0 m from crest to crest, moving past the observer at a rate of 2 waves per second. What is the velocity of ocean waves?

If two waves of same frequency and same amplitude, on superposition, produce a resultant disturbance of the same amplitude, the wave differ in phase by

Statement 1: A transverse  wave are produced in a very long string fixed at one end. Only progressive wave is observed near the free end.
Statement 2: Energy of reflected wave does not reach the free end

The displacement of a particle varies according to the relation $$ x=4(cos \pi t+ sin \pi t)$$. The amplitude of the particle is

A particle executing simple harmonic motion along y-axis has its motion described by the equation $$y = A\sin(\omega t) + B$$. The amplitude of the simple harmonic motion is:

Sound waves of wavelength $$\lambda $$ travelling with velocity $$v$$ in a medium enter into another medium in which their velocity is $$4v$$. The wavelength in $$2^{nd}$$ medium is :