Waves Test - 39...

During the propagation of wave motion, 

A particle in SHM is described by the displacement function: $$x(t)= A \ cos (\omega t+ \phi).$$ If the initial (t=0) position of the particle is 1 cm and its initial velocity is $$\pi $$ cm/sec , what is the amplitude?

The wave carries ______________

Which of the following is a Longitudinal wave? _____________

The displacement y of a wave traveling in the X-direction is given by $$y = 10^{-4}\sin({600t-2x+\dfrac{\pi}{3})}$$ metres. where $$x$$ is expressed in metres and $$t$$ in $$seconds$$. The speed of the wave motion in $$ms^{-1}$$ is:

An excerpt from a book by Einstein and Infeld gives the following remarks concerning wave phenomena:
"A bit of gossip starting in Washington reaches New York [by word of mouth] very quickly, even though not a single individual who takes part in spreading it travels between these two cities. There are two quite different motions involved, that of the rumor, Washington to New York, and that of the persons who spread the rumor."

Identify a correct inference from the above text.

Three waves of amplitudes $$ 12\mu m $$, $$ 4\mu m $$ and $$ 9\mu m $$ but of same frequency arrive at a point in a medium with a successive phase diffeerence  of $$\dfrac{\pi}{2}$$. Then the resultant amplitude is

A traveling wave in a stretched string is described by the equation, $$y = A \sin(kx+t)$$. The maximum particle velocity is

Two sound waves each of amplitude $$a$$ and of frequencies $$500 Hz$$ and $$512 Hz$$ superpose. Then the resultant of the amplitude of the resultant wave at $$t=\dfrac{5}{48} s$$ is

If two waves of length $$50 cm$$ and $$51 cm$$ produced $$12$$ beats $$per\ second$$, the velocity of sound is: