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प्रश्न
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संबंधित प्रश्न
Write true or false for a given statement.
Sound can only be produced by vibrating bodies.
How do we produce sound ?
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.
State the speed of (i) light and (ii) sound in air?
Draw a displacement-time graph for water wave.
The distance between one crest and one trough of a sea wave is 4.5 m. If the waves are produced at the rate of 240/min, calculate the time period.
State the effect of pressure on the speed of sound in air.
When a sound wave travels through air, the air particles ______.
Lightning can be seen the moment it occurs. Paheli observes lightning in her area. She hears the sound 5 s after she observed lightning. How far is she from the place where lightning occurs? (speed of sound = 330 m/s).
In which medium the speed of the sound is maximum?
