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 isA. The focal point shifts away from the lens by a small distanceB. The focus remains undisturbedC. The focus shifts to infinityD. The focal point shifts towards the lens by a small distance

A beam of parallel rays is brought to focus by a planoconvex lens. A t

1.	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 isA. The focal point shifts away from the lens by a small distanceB. The focus remains undisturbedC. The focus shifts to infinityD. The focal point shifts towards the lens by a small distance
Answer» Correct Answer - c

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