Question

Define principal axis and principal focus of a concave mirror 0

Answer 1

Answer:

Principal focus of concave mirror is a point where light rays parallel to principle axis converge. The distance between pole of mirror to point of principle focus is focal length ofmirror. Focal length of spherical mirror is half of its radius of curvature

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Answer 2

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the principal axis of a concave mirror converge at a specific point on its principal axis after reflecting from the mirror.