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Question

Where will light rays meet? Here F1 and F2 represents primary focus and secondary focus of the lens respectively


A

F1

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B

2F1

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C

F2

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D

2F2

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Solution

The correct option is A

F1



Rays coming from an infinite source on passing through a convex lens converge at the real focus of the lens. The primary focal point (F1) of a lens is also called the Object-Space Focus. Here F1 acts as real focus as parallel rays coming from real object. Parallel rays coming from virtual object meets at F2.


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