Deviation Without Dispersion

In the visible region the dispersive powers and the mean angular deviations for crown and flint glass prisms are omega', omega' and d, d respectively. The condition for getting deviation without dispersion when the two prisms are combined is

In the visible region the dispersive powers and the mean angular deviations for crown and flint glass prisms are omega, omega' and d, d' respectively. The condition for getting deviation without dispersion when the two prisms are combined is

A crown glass prism of refracting angle 6^@ is to be used for deviation without dispersion with a flint glass of angle of prism alpha . Given : for crown glass mu_r=1.513 and mu_v = 1.523, for flint glass mu_r=1.645 and mu_v=1.665 . Find alpha

A crown glass prism of refracting angle 6^@ is to be used for deviation without dispersion with a flint glass of angle of prism alpha . Given : for crown glass mu_r=1.513 and mu_v = 1.523, for flint glass mu_r=1.645 and mu_v=1.665 . Find alpha

The refractive indices of crown glass for blue and red light are 1.523 and 1.513, respectively and of dense flint glass, 1.773 and 1.743, respectively. Calculate the dispersive power of the material. What must be the anlgle of a flint glass prism which may be combined with a crown glass prism of angle 5^(@) so that the combination produces dispersion without deviation? What dispersion does the combination produces?