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Minimum Deviation

13.The follow...

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13.The following table gives the values of the angle of deviation for different values of the angle of incidence for a triangular prism Angle of incidence:33,38,42,52,60,71 Angle of deviation:60,50,46,40,43,50, For what values of the angle of incidence ,is the angle of emergence likely to be equal to the angle of incidence itself?

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