The type of waves that can be propagated through solid is
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(c) Since solid has both the properties (rigidity and elasticity)
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$Assertion :$ When a beetle moves along the sand within a few tens of centimeters of a sand scorpion, the scorpion immediately turns towards the beetle and dashes towards it
$Reason :$ When a beetle disturbs the sand, it sends pulses along the sand's surface. One set of pulses is longitudinal while the other set is transverse.
The given graph illustrates a transverse wave travelling on a string at a particular instant, and the points $P, Q, R$ and $S$ represent elements of the string. Which of the following statements about the motion of the elements is correct?
The equation of a progressive wave is $y = 8\sin \left[ {\pi \left( {\frac{t}{{10}} - \frac{x}{4}} \right) + \frac{\pi }{3}} \right]$. The wavelength of the wave is .... $m$
If at same temperature and pressure, the densities for two diatomic gases are respectively ${d_1}$ and ${d_2}$, then the ratio of velocities of sound in these gases will be
A tuning fork of frequency $480 Hz$ produces $10$ beats per second when sounded with a vibrating sonometer string. What must have been the frequency of the string if a slight increase in tension produces lesser beats per second than before ..... $Hz$
The engine of a train moving with speed $10\,ms ^{-1}$ towards a platform sounds a whistle at frequency $400\,Hz$. The frequency heard by a passenger inside the train is $........\,Hz$ (neglect air speed. Speed of sound in air $330\,ms ^{-1}$ )