Questions in waves

Select	Question
	Speed of sound at constant temperature depends on
	A man standing on a cliff claps his hand hears its echo after 1 sec. If sound is reflected from another mountain and velocity of sound in air is 340 m/sec. Then the distance between the man and reflection point is
	What will be the wave velocity, if the radar gives 54 waves per min and wavelength of the given wave is 10 m
	Sound velocity is maximum in
	The minimum distance of reflector surface from the source for listening the echo of sound is
	The type of waves that can be propagated through solid is
	A man stands in front of a hillock and fires a gun. He hears an echo after 1.5 sec. The distance of the hillock from the man is (velocity of sound in air is 330 m/s)
	Velocity of sound in air. I: Increases with temperature. II: Decreases with temperature. III: Increase with pressure. IV: Is independent of pressure. V: Is independent of temperature. Choose the correct answer.
	The speed of a wave in a medium is 760 m/s. If 3600 waves are passing through a point, in the medium in 2 minutes, then its wavelength is
	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