Question

The smoke from a fire looks white.
Which of the following statements is true?
$1$. Molecules of the smoke are bigger than the wavelength of light.
$2$. Molecules of the smoke are smaller than the wavelength of light.

Answer 1

The smoke from fire looks white. This is because molecules of smoke are bigger than the wavelength of light. This is why smoke looks white because of scattering of white light to the same extent if the smoke molecules were smaller then the scattering of the light would be different and we would see a bond of Cobus, but all wavelengths are scattered same. Therefore white light is visible.