Question

According to Rayleigh, when sunlight travels through atmosphere, the amount of scattering is proportional to $n^{th}$ power of wavelength of light. Then the value of $n$ is

• A. 4
• B. -4
• C. 3
• D. -3

Hint:

Rayleigh scattering explains why the sky is blue; scattering intensity is inversely proportional to \(\lambda^4\).

Answer 1

The Correct Option is B

Rayleigh scattering intensity \(I\) varies inversely with the fourth power of wavelength \(\lambda\): \[ I \propto \frac{1}{\lambda^4} \] Thus, \(n = -4\).