Question

Two identical glass rods and (refractive index = 1.5) 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 rod 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:

1010993
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A

B

C

D

Hard
Updated on : 2022-09-05
Solution
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Correct option is B)

Applying two times, we will get 
       

Again,
Hence, the answer is

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