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प्रश्न
What causes sound?
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उत्तर
Sound is caused due to vibrations of a body.
संबंधित प्रश्न
Distinguish between loudness and intensity of sound.
Name the characteristic which differentiates two sounds of the same pitch and same loudness.
To detect the obstacles in their path, bats produce ______.
In an experiment, Anhad studies sound waves. He sets up a loudspeaker to produce sound as shown below :
Anhad adjusts the signal to the loudspeaker to give a sound of frequency 200 Hz.
(a) What happens to the air in-between Anhad and the loudspeaker ?
(b) Explain how Anhad receives sound in both ears.
At 20°C, the minimum distance of a person from a sound reflecting surface to hear an echo is :
Define the term amplitude of a wave. Write its S.I. unit.
How are the wave velocity V, frequency f and wavelength λ of a wave related? Derive the relationship.
What do you understand by the term sound energy?
What is a longitudinal wave?
Distinguish between compression and rarefactions.
