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Radius of curvature of each surface of an equiconvex lens(u = 1.5) is 30 cm. One of the surfaces is silvered fromoutside to make it reflecting. An object is placed in front ofthe silvered lens at such a position that the image formedcoincides with the object. Distance of the object from thelens is :(a) 20 cm(b) 18 cm(c) 15 cm(d) 12 cm |
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