A ray of light reflected from surface of glass at an angle of 56*40' is found to be completely plane polarised. What is the angle of refraction of the transmitted ray? (* stands for degree)

Asked by Aakanksha Choudhary | 20th Jan, 2012, 04:48: PM

Expert Answer:

It is the case of brewester"s law , here the angle between refracted and reflected ray is 900.Here angle of incidence is known as brewster angle iB. 
 
iB=56* 40'
 
?=Tan iB------(1)
 
We know siniB/sin r=?----(2)
 
use (1) and (2) and find angle r.
 

Answered by  | 21st Jan, 2012, 05:46: PM

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