Asked by Abhijeetoo7 | 12th Feb, 2010, 02:27: AM

Expert Answer:

Dear student,

Passing light through a hollow prism is effectively the same as passing light through two plate glass sheets. On a flat plate, the incoming and outgoing angles are equal and opposite for all wavelengths. Therefore, the dispersion incurred by refraction on the incoming and outgoing surfaces cancels. There is a small residual dispersion because of the spread of wavelengths inside the plate glass.

Hope this helps.


Answered by  | 12th Feb, 2010, 10:45: AM

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