The convex surface of a thin concavo-convex lens of glass of refractive index 1.5 has a radius of curvature 20 cm. The concave surface has a radius of curvature 60 cm. The convex side is silvered and placed horizontally. The concave part is filled with water of refractive index 4/3. Where should be a pin be placed on the axis such that its image is formed at the same place?
-
UP 0 DOWN 0 0 0
