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प्रश्न
What do you understand by the ‘Echolocation system of Dolphins’?
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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
How is the frequency of a stretched string related it’s tension?
A certain sound has a frequency of 256 hertz and a wavelength of 1.3 m.
1) Calculate the speed with which this sound travels
2) What difference would be felt by a listener between the above sound and another sound traveling at the same speed, but of wavelength 2.6 m?
Name the waves which are used in sonar to find the depth of a sea. Give one reason for their use.
Why will an echo not be heard when the distance between the source of the sound and the reflecting surface is 10 m?
A type of electromagnetic wave has a wavelength of 50 Å. Name the wave and state one use of this type of wave.
When a sound is made from a distance of 18 m, in front of a tall building, it is found to get repeated again. Which phenomenon is associated with this observation? Give a brief explanation of this phenomenon?
In what respect does waveforms of noise and a musical note differ. Draw diagrams to illustrate your answer.
Explain reflection at the boundary of a rarer medium.
