A beam of unpolarized light travels from a transparent liquid of refractive index 2 into a glass slab of refractive index 6 . The polarizing angle (Brewster's angle) for the light incident on the glass from the liquid is:

Step-by-step solution

According to Brewster's law for an interface between two media, the tangent of the polarizing angle i_p is equal to the relative refractive index of the second medium with respect to the first. (i_p) = ₂ ₁ Given that the refractive index of the incident medium (liquid) is ₁ = 2 and the refracting medium (glass) is ₂ = 6 , we have: (i_p) = 6 2 = 3 Therefore, i_p = 60^ . Answer: 60^