Advertisements
Advertisements
Question
How are bats able to avoid obstacles in their way?
Solution
Bats emit the high frequencies that range between 20 KHz to 75 KHz. The echoes from these sounds help in locating the obstacles in their path and to avoid them.
APPEARS IN
RELATED QUESTIONS
Suppose you and your friend are on the moon. Will you be able to hear any sound produced by your friend?
Select the correct alternative :
Sound cannot travel in
The velocities of sound waves in four media P, Q, R and S are 18,000 km/h, 900 km/h, 0 km/h and 1200 km/h respectively. Which medium could be a liquid substance?
Explain the experiment, with a neat diagram, to prove the following:
'Sound needs material medium for propagation.'
Compare approximately the speed of sound in air, water and steel.
How does the speed of sound in air vary with temperature?
Can sound propagate in solids and liquids?
State three characteristics of the medium required for the propagation of sound.
When we hear a sound, does any part of our body vibrate? Name the part.
Find the odd one out.
