Define dispersive power (for light) of a medium.

The unit of dispersive power is

Define the term dispersion of light.

Define average power.

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

The minimum deviations suffered by red, yellow and violet beam passing through an equilateral transparent prism are 38.4^(@), 38.7^(@) and 39.2^(@) respectively. Calculate the dispersive power of the medium.

Define dispersed phase and the dispersion medium

Dispersive power depends upon

Refractive index of glass for red and violet colors are 1.50 and 1.60, respectively. Find: a. The refractive index for yellow color, approximately b. Dispersive power of the medium.

Explain the cause of dispersion of white light through a prism.

The dispersion of light in a medium implies that :