The focal length of a plano-convex glass lens is 20cm muo of glass =1.5. The plane face of it is silvered. An illuminating object is placed at a distance of 60cm from the lens on its axis along the convex side. Then the distance of the image in cm is
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Expert's answer
2018-11-05T15:45:09-0500
Plane surface of plane – convex lens is silvered and it then acts like a concave mirror of focal length:
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