What is the Brewster angle for
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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