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संबंधित प्रश्न
Write true or false for a given statement.
Larger is the amplitude, feeble is the sound.
Explain the terms 'compressions' and 'rarefactions' of a wave. What type of waves consist of compressions and rarefactions.
A cannon is fired at A (see diagram). An observer at B hears two sounds. The first sound is heard after 1 second and the second 3s after the observer sees the flash. (Velocity of sound = 340 ms−1)
(i) Why does the observer see the flash before he hears the sound?
(ii) Calculate the distance x between the observer and the wall.
Select the correct option:
If the frequency of a wave is 25 Hz. the total number of compressions and rarefactions passing through a point in 1 second is :
Can we produce sound in vacuum?
What do you mean by the frequency of sound?
Vibration of object produces ______.
Name three animals, which can hear ultrasonic vibrations.
A key of a mechanical piano struck gently and then struck again but much harder this time. In the second case
Give scientific reasons.
In earlier times, people used to listen for the arrival of a distant train by putting their ear to the rail.
