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A beam of parallel rays is brought to fo...

A beam of parallel rays is brought to focus by a planoconvex lens. A thin Concave lens of the same focal length is joined to the first lens. The effect of this is

A

The focus shifts to infinity

B

The focal point shifts towards the lens by a small distance

C

The focal point shifts away from the lens by a small distance

D

The focus remains undisturbed

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The correct Answer is:
A
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