three light rays red - yellow - blue falls perpindiuclar on a face of a prism opposite to hypotenuse as in figure where the yellow emerge tangent
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+ |_____________ red
+ |
+ ____|_____________ yellow
+ |
+ |
+ |______________ blue
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if (Phy)c = 40.18
lamda(blue) in glass = 3125 A
Nu(blue) in glass = 6x10^14 Hz

...
lamda(red) in glass = 4666.682 A
Nu(red) in glass = 4.2857x10^14 Hz

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complete the drawing and find the wavelength of yellow color in the glass by two methods.
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+ |_____________ red
+ |
+ ____|_____________ yellow
+ |
+ |
+ |______________ blue
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