General
General
Easy

Question

During refraction through a glass slab, when the medium at the both sides of the glass slab is the same then, the incident ray is parallel to ____.

  1. Refracted ray
  2. Emergent ray
  3. Normal line
  4. None of the above

hintHint:

Parallel to each other

The correct answer is: Emergent ray


    • On both the parallel sides of the glass slab, the change in direction of light ray is equal but in opposite directions.
    • Thus, the light ray emerging from the glass slab is parallel to the incident ray.
    • So, the correct option is b.

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