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प्रश्न
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संबंधित प्रश्न
Write true or false for a given statement.
A ticking clock sound is heard late when heard through a metal.
State the general name of the waves in which the particles of the medium vibrate :
(i) in the same direction as wave.
(ii) at right angles to the direction of wave.
The longitudinal waves travel in a coiled spring at a rate of 4 m/s. The distance between two consecutive compressions is 20 cm. Find :
(i) Wavelength of the wave (ii) Frequency of the wave
Define the term amplitude of a wave. Write its S.I. unit.
The speed of light in air is :
What do you understand by the term sound energy?
On placing your ear close to an iron railing which is tapped some distance away, sound is heard twice. Explain, why?
Name three animals, which can hear ultrasonic vibrations.
Distinguish between compression and rarefactions.
