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0. A convex lens has a focal length of 0.5 m. It has to be combined with a second lens, so that the combination has a power of 1.5 diopter. Which of the following could be the second lens? (NTSE Stage-II, 2013-14)
A concave lens of focal length 2 m
Another convex lens of focal length 0.5 m
A concave lens of focal length 0.5 m
A convex lens of focal length 2 m
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