If the ratio of dispersive powers of the materials of two prisms be `2:3` and ratio of angular dispersions produced by them is `1:2`, then the ratio of mean deviation produced by them is

The angular dispersion produced by a prism

The dispersive power (w) of the material of a prism is (where symbols have their usual meanings)

Two prisms A and B have dispersive powers of 0.012 and 0.018 respectively. The two prisms are in contact with each other. The prism A produces a mean deviation of 1.2^(@) , the mean deviation produced by B if the combination is achromatic is

The refractive index of the material of a prism is 1.5 and its refracting angle is 6º. Find the deviation produced by the prism for a small angle of incidence.

The refractive index of the material of a prism is 1.5 and its refracting angle is 6º. Find the deviation produced by the prism for a small angle of incidence.

Densities of two gases are in the ratio 1: 2 and their temperatures are in the ratio 2:1 , then the ratio of their respective pressure is

The refractive indices of a material for red, violet and yellow colour lights are 1.52, 1.62 and 1.59 respectively. Calculate the dispersive power of the material. If the mean deviation is 40^@ what will be the angular dispersion produced by a prism of this material ?

The ratio of radii of two wires of same material is 2 : 1 . If these wires are stretched by equal forces, then the ratio of stresses produced in them will be

A thin prism of angle 6.0^@, omega'=0.07 and mu_y'=1.50 is combined with another thin prism having omega = 0.08 and mu_y = 1.60 . The combination produces no deviation in the mean ray. (a) Find the angle of the second prism. (b) Find the net angular dispersion produced by the combination when a beam of white light passes through it. (c) If the prisms are similarly directed, what will be the deviation in the mean ray ? (d) Find the angular dispersion in the situation described in (c).

The ratio of diameters of molecules of the two gases is 3:5 and their mean free path of the molecule is in the ratio of 5:3 then the ratio of number density of the two gases is