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प्रश्न
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.
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उत्तर
Here we refer to a mechanical wave, its two properties are:
(i) These waves transmit only energy and momentum through the limited motion of the particles of the medium.
(ii) While transmitting energy, the medium remains unshifted, i.e., only energy is transmitted while particles of the matter of the medium do not travel with the same.
संबंधित प्रश्न
The following diagram shows three ways in which the string of an instrument can vibrate.
(a) which of the diagram shows the principal note?
(b) which has the frequency four times that of the first?
(c) what is the ratio of the frequency of the vibration in (i) and (ii)?
Explain how the principle of echo is used by the bat during its flight at night.
What are mechanical waves?
What are infrasonic waves?
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.
How are bats able to fly in the dark?
In what respect does waveforms of noise and a musical note differ. Draw diagrams to illustrate your answer.
What is meant by an echo? Explain.
