1.

A prism splits up light into different colours but a glass slab does not show dispersion because

A. The emergent ray is deviated from the direction of the incident ray by the angle of deviation
B. The incident and emergent rays are parallel to each other
C. The emergent ray is laterally displaced from glass slab and changes its direction
D. The incident and emergent rays are not parallel to each other
Answer» C. The emergent ray is laterally displaced from glass slab and changes its direction


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