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प्रश्न
Define frequency term in relation to a wave.
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उत्तर
The number of vibrations made by a particle of the medium in one second is called the frequency of the waves. It is also defined as the number of waves passing through a point in one second. It's S.I. unit is hertz (Hz).
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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?
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 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.
What is meant by echo depth sounding?
Name the type of waves that are used for sound ranging. Why are radio waves not audible to us?
In what respect does waveforms of noise and a musical note differ. Draw diagrams to illustrate your answer.
