Question

Four students showed the following traces [Fig.] of the path of a ray of light passing through a rectangular glass slab.

The trace most likely to be correct is that of student:

Options

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Answer 1

Explanation:

When light enters glass from air, it bends towards the normal because glass is optically denser. When it emerges from glass into air, it bends away from the normal. Since the opposite faces of the glass slab are parallel, the emergent ray is parallel to the incident ray.