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The index of refraction for violet and orange light in polystyrene are respectively 1.506 and 1.49....

The index of refraction for violet and orange light in polystyrene are respectively 1.506 and 1.49. The index of refraction for violet and orange light in flint glass are respectively 1.698 and 1.665. Based on this information, answer the following.

(a) What is the percent difference between the speed of violet light and orange light in polystyrene?
%

(b) What is this percent difference in flint glass?
%

(c) Which material is more dispersive?

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