Waves Test - 27...

Which of the following statements is correct?

A longitudinal wave has a compression to compression distance of 10 m. It takes the wave 5 s to pass a point. Find the velocity of wave.

What happens when a sound wave is reflected from the boundary of a denser medium? The compression of the incident wave is returned as a 

A particle performing SHM is found at its equilibrium at t=1sec, and it is found to have a speed of 0.25 m/s at t=2 sec. If the period of oscillation is 6 sec , calculate amplitude of oscillation.

A wave is represented by the equation $$y=10 \sin 2\pi(100t-0.02x)+10 \sin 2\pi(100+0.02x)$$. The maximum amplitude and loop length are respectively 

Equations of motion in the same direction is given by
$$y_1 = A\sin(\omega t - kx)$$, $$\space y_2 = A\sin(\omega t - kx - \theta)$$. The amplitude of the medium particle will be

Two waves of equal amplitude $$x_0$$ and equal frequency travel in the same direction in a medium. The amplitude of the resultant wave is 

A wave of frequency $$400\space Hz$$ has a velocity of $$320\space ms^{-1}$$. The distance between the particles differing in phase by $$90^{\small\circ}$$ is

The resultant amplitude due to superposition of two waves $$y_{1} = 5 \sin (wt-kx)$$ and $$y_{2}=-5 \cos (wt-kx-150^{o})$$

Two waves of same frequency but amplitudes equal to $$a$$ and $$2a$$ travelling in the same direction superimpose out of phase. The resultant amplitude will be