science
Grade-7
Easy
Question
A light ray gets refracted from multiple transparent mediums with different refractive indices and, lastly, emerges out to the first medium. The incident ray is ____ the emergent ray.
- Parallel to
- Perpendicular to
- Along the same line as that of
- Coincident to
Hint:
Parallel
The correct answer is: Parallel to
- The emergent ray become parallel to incident ray after traveling through different media, because both of them travel in same medium of same refractive index.
- So, the correct option is a.
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