Beams of light are incident through the holes A and B and emerge out of box through the holes C and D respectively as shown in 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
A. A rectangular glass slab
B. A convex lens
C. A concave lens
D. A prism
Correct Answer – A
The emergent rays are parallel and displaced laterally. Therefore, a rectangular glass slab might be inside the box.