science
Grade-7
Easy

Question

During refraction through a glass slab, the incident ray is not parallel to ____.

  1. Normal line
  2. Refracted ray
  3. Not parallel to the emergent ray
  4. None of the above

hintHint:

Incident and refracted ray are not parallel to each other.

The correct answer is: Refracted ray


    • When a light ray travels through a glass slab the ray will travel from a rarer medium to a denser medium.
    • The refracted light ray will bend towards the normal.
    • So, the incident ray and the refracted ray will not be parallel to each other.
    • So, the correct option is b.

    • Incident and emergent ray are parallel in refraction through a glass slab.
    • Incident ray can be parallel to normal line.

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