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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.
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संबंधित प्रश्न
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?
Define frequency term in relation to a wave.
Define wavelength term in relation to a wave.
Explain how the principle of echo is used by
The bat during its flight at
Explain how is the principle of echo used by
(a) The bat during its flight at night,
(b) The dolphin to locate small fish as its prey.
Write the approximate value of the speed of sound in air.
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.
A sound wavelength of 0.332 m has a time period of 10−3 s. If the time period is decreased to 10−4 s, calculate the wavelength and frequency of the new wave.
Explain reflection at the boundary of a rarer medium.
