JEE Main & Advanced Physics Ray Optics Scattering of Light

Scattering of Light

Category : JEE Main & Advanced

Molecules of a medium after absorbing incoming light radiations, emits them in all direction. This phenomenon is called Scattering.

(1) According to scientist Rayleigh : Intensity of scattered light \[\propto \frac{1}{{{\lambda }^{4}}}\]

(2) Some phenomenon based on scattering : (i) Sky looks blue due to scattering.

(ii) At the time of sunrise or sunset sun looks reddish.

(iii) Danger signals are made of red colour.

(3) Elastic scattering : When the wavelength of radiation remains unchanged, the scattering is called elastic.

(4) Inelastic scattering (Raman's effect) : Under specific condition, light can also suffer inelastic scattering from molecules in which it's wavelength changes.

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