Optics 7 Question 6
6. Two identical glass rods and (refractive index ) have one convex end of radius of curvature . They are placed with the curved surfaces at a distance as shown in the figure, with their axes (shown by the dashed line) aligned. When a point source of light is placed inside on its axis at a distance of from the curved face, the light rays emanating from it are found to be parallel to the axis inside . The distance is
(2015 Adv.)
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