Which of the following is an inactivated (killed) polio

Electrical fuse is used to interrupt excess of _________.

In which form is the supplied heat energy stored during change in temperature of substance?

Which of the following determines the loudness or softness of the sound?

Which physical property is considered dimensionless?

With reference to the types of electromagnetic waves, consider the following statements:

If an object starts moving and if there is no friction at all, what happens?

If input frequency of a full wave rectifier be n, then output frequency would be-

‘Therm' is the unit of –

What does friction cause to the screws, ball bearings and soles of the shoes?

Which of the following instruments is correctly matched with its function?

I) Voltmeter - Measures potential difference