1.

Beams of light are incident through the holes A and B and emerge out of the box through the holes C and D respectively as shown in the given Figure. Which of the following could be inside the box? (a) A rectangular glass slab (b) A convex lens (c) A concave lens (d) A prism

Answer»

The answer is(a) A rectangular glass slab

  • When incident rays fall perpendicularly on the point of incidence. 
  • A rectangular glass slab would refract and then re-refract it.


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