" ir of prisms of materials of dispersive powers "omega" and "omega'" giving mean deviations "delta" and "delta

A spectrum is formed by a prism of dispersive power 'omega' if the angle of deviation is 'delta' then the angular dispersion is

A spectrum is formed by a prism of dispersive power omega . If the angle of deviation is delta . Then the angular dispersion is

A spectrum is formed by a prism of dispersive power omega . If the angle of deviation is delta . Then the angular dispersion is

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

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