Advertisements
Advertisements
प्रश्न
What do you understand by the ‘Echolocation system of Dolphins’?
Advertisements
उत्तर
It is similar to that of bats. It enables the dolphin to navigate among its companions and larger objects. It also enables the dolphin to detect fish, squid, and even small shrimp.
संबंधित प्रश्न
Why are the ceilings of concert halls curved?
Name the characteristic of sound in relation to its waveform
How do bats avoid obstacles in their way, when in flight?
What is a megaphone ? Name the principle on which a megaphone works.
Explain how the principle of echo is used by
The dolphin to locate small fish as its prey
Write the approximate value of the speed of sound in iron.
A type of electromagnetic wave has a wavelength of 50 Å. Name the wave and state one use of this type of wave.
Waves produced on the surface of the water are formed to move with a velocity of 24 ms−1. If the wavelength of these waves equals 20 cm. find the
(i) frequency (no. of waves produced per second)
(ii) the time period (i.e. the time required to produce one wave) for these waves.
Explain why, the ceilings of concert halls are curved.
Write short notes on reflection of sound waves from plane and curved surfaces.
