In the diagram shown, which of the simple pendulum will resonate with P when set into oscillation?
The time rate of loss of heat by a body is proportional to the
A positively charged rod X is brought near an uncharged metal sphere Y and is then touched by a finger with X still in place. When the finger is removed, the result is that Y has
Electrical appliances in homes are normally earthed so that
The process whereby a liquid turns spontaneously into vapour is called
