Question

If $I$ is the intensity of scattered light of wavelength $\lambda$. then relation between them is given by:

• A. $I\propto \frac{1}{{\lambda }^4}$
• B. $I\propto {\lambda }^4$
• C. $I^2\propto \frac{1}{{\lambda }^4}$
• D. $I\propto \frac{1}{\lambda }$

Answer 1

The correct option is A $I\propto \frac{1}{{\lambda }^4}$

Rayleigh scattering is the (dominantly) elastic scattering of light or other electromagnetic radiation by particles much smaller than the wavelength of the radiation. The amount of scattering is inversely proportional to the fourth power of the wavelength.