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 of getting dispersion with zero deviation, when the two prisms are combined is

The net angular dispersion produced without deviation for crown glass (n = 1.56) and flint glass (n = 1.7) is

The net angular dispersion produced without deviation for crown glass (mu = 1.56) and flint glass ( mu = 1.7) is

The net angular dispersion produced without deviation for crown glass (mu = 1.56) and flint glass ( mu = 1.7) is

The dispersive power ( omega ) of the material of prism is given by

The dispersive power (omega) of the material of prism is given by

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?