Question

Solution of thus.....


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2. Describe with the help of a diagram, how compressions and rarefactions are

produced in the air near a source of the sound.

Ans.​

Answer 1

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[See the above attachment]

➡A vibrating object producing a series of compressions (C) and rarefaction (R)

➡In these waves, the particles move back and forth parallel to the direction of propagation of the disturbance. Such waves are called longitudinal waves.

➡There is another kind of waves called transverse waves. In these waves, the particles oscillate up and down perpendicular to the propagation of the direction of the disturbance.

➡Sound propagates in a medium as a series of compressions (C) and rarefactions (R).

➡Compressions are the regions of high pressure and density where the particles are crowded and are represented by the upper portion of the curve called crest.Rarefactions are the regions of low pressure and density where the particles are spread out and are represented by the lower portion of the curve called trough.

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Answer 2

ok......................