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the focal length of a planoconvex lens is 20 cm(ug=1.5) the plane face of it is silvered an illuminating object is placed at a distance of 60 cm from the lens on its axis along the convex side then the distance in cm of the image is |
| Answer» the focal length of a planoconvex lens is 20 cm(ug=1.5) the plane face of it is silvered an illuminating object is placed at a distance of 60 cm from the lens on its axis along the convex side then the distance in cm of the image is | |