Question

In the visible region,the dispersive powers and mean angular deviations for crown and flint glass prisms are w and w' and d and d' respectively.when the two prisms are combined,the condition of dispersion by the combination is

Answer 1

Answer:

The condition of getting dispersion wih zero deviation, when the two prisms are combined is : ( A ) √ωd+√ω′d′=0 ( B ) ωd+ω′d′=0