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50.Figure shows an object o placed in front of an equi-convex lens(refractive index = 3/2) behind which is a medium of refractive index = 4/3 and a plane mirror at a distance 47 cm from the lens. Find the distance x of the object placed in air if the final image formed coincides with the object itself. Given that radius of curvature of lens surface is 30 cm. (A) 94 cm (B) 45 cm (C) 54 cm (D) 49 cm |
| Answer» 50.Figure shows an object o placed in front of an equi-convex lens(refractive index = 3/2) behind which is a medium of refractive index = 4/3 and a plane mirror at a distance 47 cm from the lens. Find the distance x of the object placed in air if the final image formed coincides with the object itself. Given that radius of curvature of lens surface is 30 cm. (A) 94 cm (B) 45 cm (C) 54 cm (D) 49 cm | |