Subjective1) What is sound and how is it pronounced?2)Describe with the help of a diagram, how compression and rarefaction are produced in air near a source of sound 3)Cite an experiment to show that sound needs a material medium for its propagation.4)Why is sound ave called a longitudinal wave?

Subjective1) What is sound and how is it pronounced?2)Describe with th

1.	Subjective1) What is sound and how is it pronounced?2)Describe with the help of a diagram, how compression and rarefaction are produced in air near a source of sound 3)Cite an experiment to show that sound needs a material medium for its propagation.4)Why is sound ave called a longitudinal wave?
Answer» 1)Sound is the FORM of energy that creates the sensation of hearing.2) See the images below.3)BELL jar experiment4)Sound waves in air (and any fluid MEDIUM) are longitudinal waves because particles of the medium through which the sound is transported VIBRATE parallel to the DIRECTION that the sound wave moves.

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Subjective1) What is sound and how is it pronounced?2)Describe with the help of a diagram, how compression and rarefaction are produced in air near a source of sound 3)Cite an experiment to show that sound needs a material medium for its propagation.4)Why is sound ave called a longitudinal wave?

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