A equiconvex lens of focal length 20 cm is cut into two equal parts to – InterviewSolution

1.	A equiconvex lens of focal length 20 cm is cut into two equal parts to obtain two plano- convex lenses. The two parts are then put in contact as shown in figure. What is the focal length of combination?
Answer» A equiconvex lens of focal length $20 cm$ is cut into two equal parts to obtain two plano- convex lenses. The two parts are then put in contact as shown in figure. What is the focal length of combination?

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