Question

What do you mean by focus of mirror

Answer 1

Hii Mate here is ur answer....

In geometrical optics, a focus, also called an image point, is the point where light rays originating from a point on the object converge. ... A principal focus or focal point is a special focus: For a lens, or a spherical or parabolic mirror, it is a point onto which collimated light parallel to the axis is focused.

Answer 2

Heya!!!

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The light ray going parallel to principal axis after reflection meet or intersect at a certain point on principal axis . Thats what called focus .

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Thanks !!