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Question

The destiny of parallel rays in a spherical mirror (within paraxial approximation) is :


A

They remain parallel

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B

They intersect at different points on the principle axis

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C

They intersect at the same point on the principle axis

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D

Can’t comment

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Solution

The correct option is C

They intersect at the same point on the principle axis


Parallel rays incident on the principle axis, after reflection intersect at the same point on the principle axis called as focus.


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