A plano convex glass lens (μg=32) of radius of curvature R=10 cm is p – InterviewSolution

1.	A plano convex glass lens (μg=32) of radius of curvature R=10 cm is placed at a distance of b from a concave lens of focal length 20 cm. What should be the distance a of a point object O from the plano convex lens, such that the position of final image is always at same distance from concave lens?
Answer» A plano convex glass lens $(μ_{g} = \frac{3}{2})$ of radius of curvature $R = 10 cm$ is placed at a distance of $b$ from a concave lens of focal length $20 cm$ . What should be the distance $a$ of a point object $O$ from the plano convex lens, such that the position of final image is always at same distance from concave lens?

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