Choose the correct answer : Sound can travel through

• gases only

• solids only

• liquids only

• solids, liquids and gases

Voice of which of the following is likely to have minimum frequency:

• Baby girl

• Baby boy

• A man

• A woman

State True or false:

Sound cannot travel in vacuum.

In the following statements, tick ‘T’ against those which are true, and ‘F’ against those which are false :

A.

The number of oscillations per second of a vibrating object is called its time period.