Advertisements
Advertisements
Question
How does a bat make use of ultrasonics waves to find its way?
Advertisements
Solution
Use of ultrasonics by bats : Bats have no eyes. But they easily move about without colliding with any object (or obstacle). The reason is that they produce ultrasonic sound as they fly. When this ultrasonic sound comes back after reflection from any object (or obstacle) in their way, they hear it and thus they detect the presence of the object (or obstacle).
APPEARS IN
RELATED QUESTIONS
Guess which sound has a higher pitch: guitar or car horn?
State the general name of the waves in which the particles of the medium vibrate :
(i) in the same direction as wave.
(ii) at right angles to the direction of wave.
What is sound? What type of waves are sound wave in air?
What are longitudinal waves and transverse waves? Explain with the help of labelled diagrams.
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.
Answer the following question :
Can sound travel in vacuum?
Select the correct option:
Which of the following is an elastic wave?
State the effect of pressure on the speed of sound in air.
Through which medium sound travels faster, iron or water? Give reason.
