(a) The polarizing (Brewster) angle of a piece of flint glass (n = 1.66) in water is...

Question:

(a) The polarizing (Brewster) angle of a piece of flint glass (n = 1.66) in water is (1) greater than, (2) less than, (3) the same as that of the glass in air. Explain.
(b) What are the polarizing angles when it is in air and submerged in water, respectively?