Question

A ray of light passes through a rectangular glass slab of refractive index 1.5. The angle between the incident ray and emergent ray is​

Answer 1

Answer:

When a ray of light passes through a rectangular glass slab, the emergent ray is parallel to the incident ray produced.

Now, angle of deviation is the angle between the emergent ray and the incident ray produced.

So, these two rays being parallel, the angle of deviation is 0.