1.

A ray parallel to the principle axis, after reflection, will pass through the principal focus in case of a concave mirror or appear to diverge from the principal focus in case of a convex mirror, why this happens?

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Answer:

Hi Mate

Explanation:

HERE IS UR ANSWER

Since, a CONCAVE MIRROR converge the PARALLEL rays after reflection, thus a concave mirror is also known as converging mirror. In the case of convex mirror: A ray parallel to principal axis appears to DIVERGE from the principal focus after reflecting from the surface of a convex mirror.

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