On what factors does the dispersive power of the material of a prism depend?

A prism with a refracting angle of 60^@ gives angles of minimum deviation 53^@,51^@ and 52^@ for blue,red yellow light respectively.What is teh dispersive power of the material of the prism?

Define dispersive power of a prism.

On what factors does the resolving power of telescope depend?

On what factors does the resolving power of a microscope depend?

On what factors does the angular dispersion of a prism depend?

On what factors does the internal resitance of the cell depend?