Question

Choose the correct statement for a rectangular glass slab?

• A. The emergent ray is parallel to the incident ray.
• B. The emergent ray is inclined to the incident ray.
• C. The emergent ray coincides with the incident ray.
• D. The emergent ray is perpendicular to the incident ray

Answer 1

The correct option is A The emergent ray is parallel to the incident ray.

For refraction of light by a rectangular glass slab, the extent of bending is equal and opposite at the opposite ends. So, the emergent ray is parallel to the incident ray.