# What is dispersive power in optics?

## What is dispersive power in optics?

Definition of dispersive power : the power of a transparent medium to separate different colors of light by refraction as measured by the difference in refractivity for two specified widely differing wavelengths divided by the refractivity at some specified intermediate wavelength.

## What is dispersive power and its formula?

Now dispersive power (ω) of the material is defined as (ω)=δyδv−δr . Thus ω=(μ−1)A(μ−μ)A=(μ−1)(μ−μ)

What is the dispersive power of lens?

Find the focal length of each lens stating its nature. The ratio of angular dispersion between two colours to the deviation of mean ray produced by the prism is called the dispersive power of material of the prism for those colours.

What is dispersive power of an optical medium?

Dispersive power of a medium is defined as the ratio of angular dispersion of white light created by that medium to the mean deviation of light.

### What is dispersive power of a prism?

Dispersive power of prism is defined as the measure of the difference in refraction of the light of the highest wavelength and the lowest wavelength that enters the prism. The dispersive power of the prism can also be expressed in terms of the angle between the two extreme wavelengths.

### What is the use of dispersive power?

In optics, a dispersive prism is an optical prism, usually having the shape of a geometrical triangular prism, used to disperse light, that is, to separate light into its spectral components (the colors of the rainbow).

What is the dispersive power of the prism?

What is the dispersive power of material?

The dispersive power of the material of a prism is defined as the ratio of angular dispersion for any two wavelengths to the deviation of mean wavelength. Note: The deviation and the refractive index is more for violet rays than red rays.

#### What is meant by dispersive power of a prism?

Dispersive power of a prism is defined as the ratio of angular dispersion to mean deviation produced by prism.