Unpolarized light is incident on a plane glass surface at an angle of 57 degrees. If the reflected light is found to be completely polarized, what is the refractive index of the glass?

C. 1.54 — According to Brewsters Law, the refractive index n is equal to the tangent of the polarizing angle. Thus, n = tan(57 degrees), which is approximately 1.54.

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$Unpolarized light is incident on a plane glass surface at an angle of . If the reflected light is found to be completely polarized, what is the refractive index of the glass? (Given )$

A. $1.33$
B. $1.50$
C. $1.54$
D. $1.73$

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Correct answer: C — $1.54$

Solution

According to Brewster's Law, the refractive index is given by , where is the polarizing angle. Given , .

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Unpolarized light is incident on a plane glass surface at an angle of i=57∘. If the reflected light is found to be completely polarized, what is the refractive index of the glass? (Given tan(57∘)≈1.54)

Solution

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More Wave Optics practice questions

$Unpolarized light is incident on a plane glass surface at an angle of . If the reflected light is found to be completely polarized, what is the refractive index of the glass? (Given )$