Question

When white light enters a prism, it gets split into its constituent colours. This is due to:

Options

• Different refractive index for different wavelength of each colour.

• Each colours has same velocity in the prism.

• Prism materials have a high density.

• Scattering of light

Answer 1

Different refractive index for different wavelength of each colour.

Explanation:

Dispersion takes place because the refractive index of the material of the prism is different for different wavelength.