Physics
JAMB 2003
A ray incident on a glass prism undergoes minimum deviation when the
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A.
incident angle is equal to the angle of refraction
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B.
refraction angle equals 90o
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C.
incident angle equals 90o
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D.
incident angle is equal to the angle of emergence
Correct Answer: Option D
Explanation
At minimum deviation, it is observed that light passes symmetrically through, the prism such that the angle of incidence (io) is angle to the angle of emergency (eo).(i/e Io = eo)
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