If a neutral body is brought near to the electroscope its
leaves:
The screen of a cathode ray tube consists of a thin layer
of:
The process by which electrons are emitted by a hot metal
surface is known as:
If the mass of the bob of a pendulum is increased by a
factor of 3, the period of the pendulum’s motion will:
The line which passes through pole of the mirror and center
of curvature is called principal:
