A convex lens of focal length 40 cm and a concave lens of focal length – InterviewSolution

1.	A convex lens of focal length 40 cm and a concave lens of focal length 25 cm are placed in contact in such a way that they have the common principal axis. Find the power of the combination. [3 MARKS]
Answer» A convex lens of focal length 40 cm and a concave lens of focal length 25 cm are placed in contact in such a way that they have the common principal axis. Find the power of the combination. [3 MARKS]

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