Advertisements
Advertisements
Question
Advertisements
Solution
Bats make a series of twittering sound, so high pitched that human ear can not hear. These sound waves strike against the obstacles less in their path of flight and send back echoes to the bat’s ear. The echoes tell the bats, how they must turn in the air to avoid colliding with the obstacles or with one another.
RELATED QUESTIONS
Why is sound wave called a longitudinal wave?
Write true or false for a given statement.
A sound is a form of energy.
Write true or false for a given statement.
A ticking clock sound is heard late when heard through a metal.
On what factor does the loudness of a sound depend ?
Which wave property determines loudness?
Calculate the wavelength of a sound wave whose frequency is 220 Hz and speed is 440 m/s in a given medium.
Are sound waves longitudinal or transverse?
Draw a displacement-distance graph of a wave and mark on it, the amplitude of wave by the letter 'a' and wavelength of wave by the letter λ.
Select the correct option:
A part of longitudinal wave in which particles of the medium are farther away than the normal particles is called :
A continuous disturbance is created on the surface of water in a ripple tank with a small piece of cork floating on it. Describe the motion of the cork. What does the motion of the cork tell about the disturbance?
The distance between one crest and one trough of a sea wave is 4.5 m. If the waves are produced at the rate of 240/min, calculate the wave velocity.
How do the following factor affect the speed of sound in air?
Temperature of air
Distinguish between light and sound waves. What are the consequences of the large difference in the speed of sound and that of light? Briefly explain them.
Unwanted sounds are called ______.
In longitudinal waves, the particle vibrates in a ______ direction of propagation.
The elastic property of medium is a factor of ______ medium.
How do we hear the sound?
