Question

① Define
Define the Principal focus of a concave mirror.
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Answer 1

Principle focus is a point where all parallel intersect each other on the Principle Axis.

Answer 2

Answer:

Light rays that are parallel to the principal axis of the concave mirror converge at the specific point on it principal axis axis after reflecting from the mirror. This point is know as the principal focus of the concave mirror.

Explanation:

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