In a concave mirror, reflecting side is bulging surface.

What is concave mirror ?

A ray passing through the principal focus of a concave mirror or a ray which is directed towards the principal focus of a convex mirror, is reflected back along the same path.

Explain why a ray of light passing through the centre of curvature of a concave mirror gets reflected along the same path after reflection.

Show with a neat diagram, the direction of the reflected ray in case of a concave mirror if the incident ray is : Passing through the focus.

Show with a neat diagram, the direction of the reflected ray in case of a concave mirror if the incident ray is : Passing through the centre of curvature.

Show with a neat diagram, the direction of the reflected ray in case of a concave mirror if the incident ray is : Parallel to the principal axis,

If a concave mirror is held in water, will its focal length change as compared to its value in air?

What is reflection?