# What is Meant by (I) Principal Focus of a Convex Mirror, and (Ii) Focal Length of a Convex Mirror? - Science

What is meant by (i) principal focus of a convex mirror, and (ii) focal length of a convex mirror?

#### Solution

Definitions-
(i) Principal focus (F) of a convex mirror - Focus is the point at which the incident rays, parallel to the principal axis, appear to have come from, after reflection.
(i)Focal length (f) - Focal length of a convex mirror may be defined as the distance between its pole and focus.

Concept: Convex Mirror
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#### APPEARS IN

Lakhmir Singh Class 10 Physics (Science)
Chapter 4 Reflection of Light
Q 13.1 | Page 179