A pressure cooker works on the principle of

If the length of a simple pendulum is being increased by 4-fold, time period of oscillation will be

When long dry hair is brushed the strands often move away from each other because while brushing

Rays of light get refracted while passing from air to glass because

Ohm’s law can also be taken as a statement for

A current of 0.5 A is drawn by a filament of an electric bulb for 20 minutes. The amount of electric charge that flows through the circuit is