The angle of incidence at which reflected light in totally polarized for reflection from air to glass (refractive index n), is

(a) sin–1(n) 

(b) sin–1(1/n)

(c) tan–1(1/n) 

(d) tan–1(n).


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(d) : According to Brewster's law of polarization, n = taniP where ip is angle of incidence
Therefore, ip = tan–1(n).

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