Advertisements
Advertisements
प्रश्न
How are bats able to avoid obstacles in their way?
Advertisements
उत्तर
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
संबंधित प्रश्न
Can sound travel through a vacuum ? Describe an experiment to explain your answer.
Explain why, a ringing bell suspended in a vacuum chamber cannot be heard outside.
An electric bell is suspended by thin wires in a glass vessel and set ringing. Describe and explain what happens if the air is gradually pumped out of the glass vessel.
Sound travels in air :
Flash of lightning reaches earlier than the sound of thunder. Explain the reason.
How does the speed of sound in air vary with temperature?
The time interval between a lightning flash and the first sound of thunder was found to be 5 s. If the speed of sound in air is 330 m s-1, find the distance of flash from the observer.
What is the approximate value of the speed of sound in air at N.T.P.?
Does the speed of sound in a gas depend on the pressure of the gas?
In any medium, as the ______ increases, the speed of sound also increases.
