State the relationship between the wavelength of light and the size of the particle causing scattering.

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Solution

Condition for the scattering of light,
wavelength of light â‰ˆ size of the scattering particle.
According to Rayleigh scattering,
a= (AV/rÎ»²)
Where A = amplitude of incident light
Î» = wavelength of light
V = volume of the scattering particle
a = amplitude of scattered light at a distance r from the scattering particle.

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