Physics, asked by ATharvraje, 1 year ago

what is net angular dispersion in dispersion without deviation

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Answered by thebc
2
Dispersion without Deviation. Consider two prisms, one of crown glass and refracting angle A and the other of flint glass and refracting angleA' placed together keeping their bases opposite to each other as shown in figure. ... So, net deviation produced by the combination for mean colour is zero.
Answered by LightningMccQueen
1
Consider two prisms, one of crown glass and refracting angle A and the other of flint glass and refracting angle A’ placed together keeping their bases opposite to each other as shown in figure. Let µv, µ and µr be the refractive indices of the crown glass for violet, mean and red colour while µv ‘, µ’ and µr’ be the corresponding values for flint glass.

When white light is incident on the crown glass prism, it is deviated as well as dispersed which fall on the flint glass prism. The deviation produced by crown glass prism for mean colour is equal and opposite to that produced by flint glass prism. So, net deviation produced by the combination for mean colour is zero.

Condition for no Deviation


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