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प्रश्न
What is sound? What causes it to produce?
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उत्तर
A sound is a form of energy. It is that external physical cause that affects the ear to produce the sensation. Sound is produced only when some material body is made to vibrate.
संबंधित प्रश्न
Write true or false for a given statement.
A ticking clock sound is heard late when heard through a metal.
Calculate the wavelength of a sound wave whose frequency is 220 Hz and speed is 440 m/s in a given medium.
What is loudness of sound? What factors does it depend on?
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.
How are the wave velocity V, frequency f and wavelength λ of a wave related? Derive the relationship.
What is musical sound? Give an example.
A person hearing at one end of a long metal bar hears two distinct sounds when the other end is struck with a stone. Explain, giving scientific reasons
If the energy in a longitudinal wave travels from south to north, the particles of the medium would be vibrating in _____.
Sound can travel through solids, gases, liquids, and even vacuum.
