The power of a concave lens is 10 D and that of a convex lens is 6 D. – InterviewSolution

1.	The power of a concave lens is 10 D and that of a convex lens is 6 D. When these two lenses are placed in contact with each other, the power of their combination will be : (a) + 16 D (b) + 4 D (c) -16 D (d) - 4 D
Answer» The power of a concave lens is 10 D and that of a convex lens is 6 D. When these two lenses are placed in contact with each other, the power of their combination will be : (a) + 16 D (b) + 4 D (c) -16 D (d) - 4 D

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