The image of an object, formed by a plan...

The image of an object, formed by a plano- convex lens at a distance of 8 m behind the lens, is real and is one-third the size of the object. The wavelength of light inside the lens is `(2)/(3)` times the wavelength in free space. The radius of the curved surface of the lens is

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The image of an object, forme by a plano-convex lens at a distance of 8m behind the lens, is real and is one-third the size of the object. The wavelength of light inside the lens is (2)/(3) times the wavelength is free space. The radius of the curved surface of the lens is

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