Question:
What is the Brewster angle for air to glass transition? (Refractive index of glass=1.5.)
Solution:
Refractive index of glass, $\mu=1.5$
Consider Brewster angle $=\theta$'
Following is the relation between the Brewster angle and the refractive index:
$\tan \theta=\mu$
$\theta=\tan ^{-1}(1.5)=56.31^{\circ}$
Therefore, the Brewster angle for air to glass transition is 56.31°
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