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Questions on thin prism

by Misr
Tags: prism
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Sep10-11, 11:26 AM
P: 391
1.the angles of thin prism are very small ,that's why the prism is always in the position of minimum deviation angle.
I don't understand this statement at all!!how to prove this?

the deviation angle in a thin prism depends upon the refractive index but It doesn't depend upon the angle of incidence because the prism is always in the position of minimun deviation angle.

I don't understand this either.
Thanks in advance
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Sep11-11, 01:46 AM
P: 391
am I using the right word "thin prism"?

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