The geometrical centre of a spherical mirror

The geometric centre of a spherical mirror is called

Geometric centre of a spherical mirror is called its centre of curvature. _____

What is a spherical mirror?

An imaginary line passing through the pole and the centre of curvature of a spherical mirror is called the _____

How is the focal length of a spherical mirror related to its radius of curvature?

Any ray of light which initially passes through the principal focus of a spherical mirror, after reflection passes through centre of curvature.

The radius of curvature of a spherical mirror is 20 cm. What is its focal length?

Magnitude of focal length of a spherical mirror is f and magnitude of linear magnification is 1/2

(a) If the image formed by a mirror for all positions of the object placed in front of it is always diminished, erect and virtual, state the type of the mirror and also draw a ray diagram to justify your answer. Write one use such mirrors are put to and why? (b) Define the radius of curvature of spherical mirrors. Find the nature and focal length of a spherical mirror whose radius of curvature is +24 cm.

The positions of the object O (real or virtual) and the image I (real or virtual) with respect to the optical axis of a spherical mirror is shown. Then select the possible mirror and its position to realise it. .