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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.
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संबंधित प्रश्न
Name the characteristic of sound in relation to its waveform
Displacement distance graph of two sound waves A and B, travelling in a medium, are as shown in the diagram below.
Study the two sound waves and compare their:
1) Amplitudes
2) Wavelengths
Name two sound absorbing materials (or objects) which can make our big room less echoey.
What is a soundboard ? Explain the working of a soundboard with the help of a labelled diagram.
Explain how the principle of echo is used by
The dolphin to locate small fish as its prey
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?
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.
