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CBSE Class 12-science Answered

brewester law
 
Asked by Mendy | 25 Jan, 2015, 12:03: PM
answered-by-expert Expert Answer

Brewster's law states that the tangent of the polarizing angle is equal to the refractive index of the material of the reflecting medium.

i.e. tan P = n

At the polarizing angle of the incidence, the reflected and refracted rays are perpendicular to each other.

begin mathsize 14px style straight r space plus space straight P space equals space 90 degree straight n space equals space fraction numerator sin space straight i over denominator sin space straight r end fraction equals fraction numerator sin space straight P over denominator sin space left parenthesis 90 minus straight P right parenthesis end fraction straight n equals fraction numerator sin space straight P over denominator cos space straight P end fraction equals tan space straight P end style

Answered by Faiza Lambe | 27 Jan, 2015, 10:28: AM
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