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प्रश्न
Point out the waves from the given list, i.e., light, sound, radio waves, ultrasonic waves, and thermal radiation, the energy is propagated by mechanical waves.
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उत्तर
The energy, in sound and ultrasonic waves, is propagated by mechanical waves.
संबंधित प्रश्न
Define frequency term in relation to a wave.
Define wavelength term in relation to a wave.
Name two sound absorbing materials (or objects) which can make our big room less echoey.
What is a megaphone ? Name the principle on which a megaphone works.
Explain how the principle of echo is used by the bat during its flight at night.
Mention two properties of a wave, one property which varies and the other which remains constant when the wave passes from one medium to another.
How are bats able to fly in the dark?
What are fishing boats?
