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Question
In refraction of light through a glass slab, the directions of the incident ray and the refracted ray are ______.
Options
Perpendicular to each other.
Non-parallel to each other.
Parallel to each other.
Intersecting each other.
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Solution
In the refraction of light through a glass slab, the directions of the incident ray and the refracted ray are parallel to each other.
Explanation:
For refraction to happen the light ray will have to incident obliquely. If the light ray is incident on the glass slab at a zero angle of incidence the ray will travel without any change of direction.
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