The distance between the pole and centre of curvature of a spherical mirror is called _________ .

Q. Define (a) centre of curvature (b) radius of curvature (c) pole (d) principal axis, and (e) aperture, of a spherical mirror with the help of a labelled diagram.

Q. The straight line joining the centre of curvature and pole of a spherical mirror is called plane of incidence.

Q. In the case of a mirror, match the items in column A with those in column B.
A B
1. Centre of curvature (a) centre of the mirror
2. Focus (b) centre of the sphere of which the mirror is a part
3. Radius of curvature (c) point through which all the incident rays parallel to principal axis pass after reflection
4. Principal axis (d) line joining the pole and focus
5. Pole (e) distance between pole and centre of curvature

Q.

Define the terms pole, principal axis and centre of curvature with reference to a spherical mirror.

Q. The geometrical centre of a spherical mirror is called its pole.