Explain with a suitable diagram, how a concave mirror converges a parallel beam of light rays. Mark clearly the pole, focus and centre of curvature of concave mirror in this diagram.

Name the two types of spherical mirrors. What type of mirror is represented by the:

(a) Back side of a shining steel spoon?

(b) Front side of a shining steel spoon?

What is the relation between the focal length and radius of curvature of a spherical mirror (concave mirror or convex mirror)? Calculate the focal length of a spherical mirror whose radius of curvature is 26 cm.

Describe with a suitable diagram, how a convex mirror diverges a parallel beam of light rays. Mark clearly the pole, focus and centre of curvature of convex mirror in this diagram.

Define

(a) Center of curvature

(b) Radius of curvature

(c) Pole

(d) Principal axis, and

(e) Aperture, of a spherical mirror with the help of a labeled diagram.