Question

befine principle focus of concave mirror ​

Answer 1

Explanation:

The principal focus of the concave mirror is an point on the principal axis of the mirror, where incident rays of light, parallel to the principal axis, after reflection from mirror surface, intersect each other .

Answer 2

♥ANSWER♥

Principal Focus

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The principal focus of a Concave lens is the point on the principal axis from which rays parallel to the principal axis appear to diverge after refraction

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