Refraction, Glass Slab & Apparent Depth
A beam of light composed of red and green ray is incident obliquely at a point on the face of rectangular glass slab. When coming out on the opposite parallel face, the red green ray emerge from
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Answer: (b)
- Glass has different for red and green, so they refract at different angles inside and reach the far face at two different points.
- At a parallel face each ray emerges parallel to the incident direction.
- So both emerge parallel to each other but from two points: the answer is (b).