Question

For a rectangular glass slab the incident ray and emergent ray are:

Options

• convergent and meet at some distance away from the glass slab

• divergent and do not meet at some distance away from glass slab.

• parallel to each other and hence do not meet.

• all of these.

Answer 1

Parallel to each other and hence do not meet.

Explanation:

The opposite faces of a rectangular glass slab are parallel. Therefore, the emergent ray is parallel to the incident ray, though it is laterally displaced. The rays are neither convergent nor divergent, so “all of these” is also incorrect.