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  • (i) State law of Malus. (ii) Draw a graph showing the variation of intensity (I) of polarised light transmitted by an analyser with angle <img alt="\left ( \theta \right )" src="https://entrancecorner.codecogs.com/gif.latex?%5Cleft%20%28%20%5Cth

(i) State law of Malus.
(ii) Draw a graph showing the variation of intensity (I) of polarised light transmitted by an analyser with angle \left ( \theta \right ) between polariser and analyser.
(iii) What is the value of refractive index of a medium of polarising angle 60^{\circ} ?

 

 

 

 
 
 
 
 

Answers (1)

(i) Malus's Law ; Intensity of completly plane polarized light when transmitted by an analyzer is proportional to the square of the  cosine of angle between transmission axis of analyzer and polarizer
I= I_{0} \cos ^{2}\theta

ii)
 
(iii) By Brenesters law
   M= \tan i_{B}
         = \tan 60= \sqrt{3}

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Safeer PP

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