Question

define the term principle focus of a sperical mirror by drawing a suitable diagram​

Answer 1

Answer:

Draw the ray diagram. ... (a) A number of rays parallel to the principal axis after reflection from a concave mirror meet at a point on the principal axis or appear to come from a point after reflection from a convex mirror on the principal axis. This is called principal focus. (b) When the object is placed beyond C.

Explanation:

FOLLOW

Answer 2

Answer:

A number of rays parallel to the principal axis after reflection from a concave mirror meet at a point on the principal axis or appear to come from a point after reflection from a convex mirror on the principal axis. ... This is called principal focus.