Ncert Exercises & Solutions

10.8 What is the Brewster angle for air to glass transition? (Refractive index of glass = 1.5.)

Hint: Recall Brewster's law.
Step 1: Find the Brewster angle for air to the glass transition.

Refractive index of glass, $μ = 1.5$
Consider Brewster angle = $θ $Now,~\mu =tan\theta $ $\Rightarrow~\theta =tan^{-1} \left ( \mu \right )=tan^{-1}\left ( 1.5 \right )=56.31^{o}$$