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White light is passed through a prism ...

White light is passed through a prism of angle `10^(@)` If the rafractive index for red and violet colour are `1.641` and `1.659` .Then find out-
( a) Angle of deviation for violet and red
( b) Angular dispersion
( c ) Dispersive power .

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`(a ) 6.41^(@) , ( b) 0.18^(@) , ( c) 0. 0276`
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