Question

explain with an example the propogation of sound in a medium​

Answer 1

Explanation:

Explanation:When a source of sound vibrates,it creates a periodic disturbance in the medium near it,i.e the state of particles of medium changes. The disturbance then travels in the medium in form of waves. For example:- We know that formation of waves in air cannot be seen by the eye

Answer 2

━━━━━━━━━━━━━━━━━━━━━━━

$\large{\underline{\underline{\sf{\orange{Answer:-}}}}}$

explain with an example the propogation of sound in a medium?

• A vertical metal strip with its lower end secured and upper end suspended free to vibrate as seen in figure is used.
• As observed in the figure. when the strip is moved from a to b, the air present in that area is compressed at point C.
• The particles present in this layer, compress the layer next to it, which in turn compresses the layer next to it and the process continues.
• Therefore, the disturbance advances in the form of compression while the particles are still intact in their original positions, without being displaced from their mean positions.
• As observed, when the strip reverts from b to a, after propelling the particles forward, the compression moves forward, the air particles near the strip bounce to their original position.
• When the strip moves from a to c as observed in the figure. it pushes the layer of air near it towards left, causing a low pressure space on the right side. The layers of air get rarefied, the region is known as rarefaction.
• As observed in the figure, when the strip reverts from C to its mean position A, the rarefaction R travels forward and air near the strip return to their normal positions.

Hence, one full to and fro motion of the strip produces one compression and one rarefaction, generating one wave. This wave through which sound propagates in air is known as longitudinal wave.

━━━━━━━━━━━━━━━━━━━━━━━