In the phenomenon of dispersion without devia | vedclass

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Question

(B) Dispersion without deviation is achieved by using a combination of two prisms (usually crown and flint glass) such that the net deviation produced

Vedclass · Accepted Answer

The yellow coloured ray is parallel to the incident ray.

Vedclass · Answer

(B) Dispersion without deviation is achieved by using a combination of two prisms (usually crown and flint glass) such that the net deviation produced is zero for the mean colour.In the visible spectrum,the mean colour is taken to be yellow.Therefore,the net deviation for the yellow ray is zero,which means the emergent yellow ray is parallel to the incident ray.Thus,the correct option is $B$.

In the phenomenon of dispersion without deviation,which of the following statements is true?

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