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Question:

In an experiment to trace the path of a ray of light through a glass prism for different values of angle of incidence, a student would find that the emergent ray:

perpendicular to the incident ray

is parallel to the incident ray

is parallel to the refracted ray

bends at an angle to the direction of incident ray

Solution:

The path followed by the incident ray and the emergent ray on passing through a prism are at different angles. Upon refraction of a ray of light through prism, the emergent ray always bends at an angle with incident ray called angle of deviation.