The reddish appearance of the sun during sun rise and sunset is due to
Answer & explanation
Correct answer: option 3
The correct answer is option (3) : Due to its. longer wavelength, its scattering is least hence travels longer and reach our eyes .
At sunrise and sunset rays pass through a larger distance through atmosphere so most of blue and other shorter wavelength are removed by scattering. The least scattered light reaches our eyes.
Amount of scattering $∝\frac{1}{\lambda^4}$