Define Pole.
The central point of a mirror is called its Pole.
ICSE
What is a Concave mirror?
A concave mirror or converging mirror has a reflecting surface that bulges inward.
Define Convex mirror.
A convex mirror, fish eye mirror, or diverging mirror is a curved mirror in which the reflective surface bulges towards the light source.
What happens to the ray of light when it enters from an optically denser medium?
When a ray of light travels from an optically rarer to an optically denser medium it bends towards the normal.
What happens to the ray of light when it enters from an optically rare medium?
When a ray of light travels from an optically rarer medium it bends away from the normal.
Define Refraction.
Refraction is the phenomenon in which a ray of light bends from its straight path at the surface of separation of two media when it travels from one medium to the other.
Identify the kind of energy possessed by a running athlete.
Kinetic energy
Identify the kind of energy possessed by a rolling stone .
Kinetic energy
Water stored in a dam possesses which energy ?
Potential energy