1.

A student took plastic funnel and stretched a piece of balloon over its widen part. He put some mustard seeds on it and shouted loud. His purpose is A) Sound is produced from vibration of vocal cords B) Sound is a kind of energy that vibrates only the mustard seeds C) Sound is produced due to vibration of particles D) We can hear sound as the particles of air are vibrated and waves are formed

Answer»

D) We can hear sound as the particles of air are vibrated and waves are formed



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