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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
The human ear can detect continuous sounds in the frequency range from 20 Hz to 20,000 Hz. Assuming that the speed of sound in air is 330 ms1 for all frequencies; calculate the wavelengths corresponding to the given extreme frequencies of the audible range
A wave passes from one medium to another medium. Mention one property of the wave out of speed, frequency or wavelength which does not change.
What is the condition necessary for an echo to be heard distinctly?
What is a bulb horn ? Name the principle on which a bulb horn works.
In what respect does waveforms of noise and a musical note differ. Draw diagrams to illustrate your answer.
A sound wave whose frequency is 5000 Hz travels in air and then hits the water surface. The ratio of its wavelengths in water and air is ______.
