Zafar Sir

Define the Principal Focus of a concave mirror and Convex Mirror

For Concave Mirror:-

The Point at which rays parallel to principal axis coming from infinity coverage after being reflected from concave mirror is called the Principal Focus of Concave Mirror.

 

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 

 

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