A light ray passes through a glass slab. Which of the following diagrams shows the correct path of the ray?

Foundation

Physics Foundation

refraction from lens

Refraction and parallel slab

Light

Question

A light ray passes through a glass slab. Which of the following diagrams shows the correct path of the ray?

A

B

C

D

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When light travels from a rarer to a denser medium, it bends towards the normal. And when light travels from denser to rarer medium, it bends away from the normal. Also, from the diagram, it is clear that emergent ray will always be parallel to the incident ray.