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प्रश्न
How is the frequency of a stretched string related to its length?
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उत्तर
The frequency of a stretched string is inversely proportional to its length.
`f prop 1/l`
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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 m s−1 for all frequencies, calculate the wavelengths corresponding to the given extreme frequencies of the audible range.
Define amplitude term in relation to a wave.
Define wavelength term in relation to a wave.
Define wave velocity term in relation to a wave.
State two differences between the light and sound waves.
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.
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.
(i) A man stands at a distance of 68 m from a cliff and fires a gun. After what time interval will he hear the echo, if the speed of sound in air is 340 ms−1?
(ii) If the man had been standing at a distance of 12 m from the cliff would he have heard a clear echo?
What is mean by the reflection of sound?
Write short notes on reflection of sound waves from plane and curved surfaces.
