Q5 of 34 Page 214

In toy telephone the sound travels through which medium?

In toy telephone the sound travels through the string i.e. a solid medium.


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3

Whether sound can travel without medium?

 4

Explain the reason of not putting the sharp or pointed things into the ear.

 1

State the SI unit in which the loudness of sound is measured.

 2

State the relation between time period and frequency.