Dispersion Without Deviation

Two prisms A and B are in contact with each other have angular dispersions of 2^(0) and 4^(0) respectively.The dispersive power of A is 0.002 .If the combination produces dispersion without deviation the dispersive power 'B' is

Two prisms A and B are in contact with each other have angular dispersions of 2^(0) and 4^(0) respectively.The dispersive power of A is 0.002 .If the combination produces dispersion without deviation the dispersive power 'B' is

Two prisms A and B are in contact with each other have angular dispersions of 2^(@) and 4^(@) respectively. The dispersive power of A is 0.002. If the combination produces dispersion without deviation, the dispersive power of B is

Two prisms A and B are in contact with each other have angular dispersions of 2^(@) and 4^(@) respectively. The dispersive power of A is 0.002. If the combination produces dispersion without deviation, the dispersive power of B is

A thin prism of angle 6^(@) made up of glass of refractive index 1.5 is combined with anorher prism made up of glass of refractive index 1.75 to produce dispersion without deviation. The angle of second prism is

A thin prism of angle 6^(@) made up of glass of refractive index 1.5 is combined with anorher prism made up of glass of refractive index 1.75 to produce dispersion without deviation. The angle of second prism is

A prism of refractive index mu_1 = 1.42 and prism angle 10° is arranged with another prism of refractive index mu_2 = 1.7. If this combination gives the dispersion without deviation, then what should be the prism angle of second prism?

A prism of refractive index mu = 1.5 and prisim angle 15^@ is arranged with another prism ( refractive index mu_2 = 1.75. If this combination gives the dispersion without deviation, the what should be the prism angle of second prism ?