Question

Which of the following statements are correct? (i ) Sound is produced by vibration. (i) Sound needs a medium for propagation. (ii) Light and sound both requires a medium for propagation.​

Answer 1

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Sound needs a medium for propagation

Answer 2

Answer:

(i) Sound needs a medium for propagation

Explanation:

Sound is a mechanical wave and light is an electromagnetic wave. Thus sound needs a medium to travel. But light does not need a medium to travel. Sound is produced by the to and fro motion or the vibrations produced in an object, these vibrations propagate through the medium to finally reach the receiver.