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प्रश्न
A medium is necessary for ______ of sound.
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उत्तर
A medium is necessary for propagation of sound.
संबंधित प्रश्न
Write true or false for a given statement.
A sound is a form of energy.
Fill in the blank.
________ produces a sensation in ears.
What are infrasonics? Can you hear them?
What causes sound?
Name the Sound of the Frequency Given Below:
200 Hz
Vibration of object produces ______.
What is a longitudinal wave?
The sound produced by a thunderstorm is heard 10 s after the lightning is seen. Calculate the approximate distance of the thunder cloud. (Given the speed of sound = 340 m s–1.)
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).
Give scientific reason.
In earlier times, people used to listen for the arrival of a distant train by putting their ear to the rail.
