Waves Test - 76...

A sound wave is traveling towards right and its s-t graph is as show for x=0.
What will be density vs x graph at t=T/4:-

Two waves of amplitudes 4a and 2a have a phase different of $$\pi $$ between them. The resultant intensity will be :-

Equation Of a Progressive Wave Is Given By 
$$ y=0.2cos\pi \left( 0.04t\quad +\quad 0.02x\quad -\frac { \pi  }{ 6 }  \right)  $$
The Distance Is Expressed In cm And Time In Second. What Will Be The Minimum Distance Between Two Particles Having The Phase Difference Of $$ \pi/2 $$

The amplitude and time period of a particle of mass 0.1kg executing simple harmonic motion are 1m and 6.28s, respectively, Find its (i) angular frequency ,(ii) acceleration and (iii) velocity at a displacement of 0.5 m

Two waves having sinusoidal waveforms have different wavelengths and different amplitude. They will be having 

The equation of the progressive, where  $$t$$  is the time in second,  $$x$$  is the distance in metre is  $$y = A \cos 240 \left( t - \dfrac { x } { 12 } \right).$$  The phase difference (In SI units) between two positions  $$0.5m$$  apart is

A radio station broadcasts at $$760$$ kHz. What is the wavelength of the station?

A particle moves with simple harmonic motion in a straight line. In first $$t \, s$$, after starting from rest it travels a distance $$a$$, and in next $$t \, s$$ it travels $$2a$$, in the same direction, then: 

Three waves of equal frequency having amplitudes $$10 \mu m , 4\mu m, 7 \mu m$$ arrive at a given point with successive phase difference of $$\cfrac {\pi}{2}$$ radian. The amplitude of the resultant wave is. 

A particle starts its SHM on a line at initial phase of $$\pi /3$$. It reaches again the point of start after time t. It crosses yet another point P on the same line at successive intervals 2t and 3t respectively. Find the amplitude of the motion. If the particle crosses the point of start at speed 2m/s.