Question

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 the Figure Which of the following could be inside the box?

 

Options

• A rectangular glass slab

• A convex lens

• A concave lens

• A prism

Answer 1

A rectangular glass slab

Explanation -

In the given situation, the incident ray and the emergent ray are parallel to each other. It is possible only in the case of rectangular glass slab.