Blue colour of sea water is due to

Assertion: A red object appears dark in yellow light.

Reason: Red colour is scattered less.

Check the correct statements on scattering of light.

$S_1:$ Rayleigh scattering is responsible for the bluish appearance of sky.

$S_2:$ Rayleigh scattering is proportional to $\frac{1}{{\lambda }^4}$ when the size of the scatterer is much less than $\lambda$.

$S_3:$ Clouds having droplets of water (large scattering objects) scatter all wavelengths almost equal and so are generally white.

$S_4:$ The sun looks reddish at sunset and sunrise due to Rayleigh scattering.

Reason: Glass sheet with rough surface absorbs more light.