The Sky Appears Blue Due to
Answer : (1). Rayleigh scattering
The sky appears blue due Rayleigh scattering of white light comes from the sun.
Scattering of light by some tiny particles or molecules present in the atmosphere.
Rayleigh scattering is discovered by Lord Rayleigh, he calculated the intensity of scattering from dipole scatter in the very small unit of wavelength.
In Rayleigh scattering, the molecules of the atmosphere are vibrating due photon energy.
The blue light is scattered much due to its short wavelength.
The wavelength of is 450nm.