Check sibling questions

Define the principal focus of a concave mirror.

 

Answer

The point at which 

rays parallel to principal axis

coming from infinity converge 

after being reflected from concave mirror 

is called the principal focus of concave mirror.

concave-mirror---object-at-infinity---teachoo.jpg

For a convex mirror

The point at which 

rays parallel to principal axis

coming from infinity appear to converge 

after being reflected from convex mirror 

is called the principal focus of convex mirror.

convex-mirror---object-at-infinity---teachoo.jpg

CA Maninder Singh's photo - Co-founder, Teachoo

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CA Maninder Singh

CA Maninder Singh is a Chartered Accountant for the past 12 years and a teacher from the past 16 years. He teaches Science, Economics, Accounting and English at Teachoo