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CBSE Class 12-science Answered

state law of malus and draw an intensity v/s angle bt the plane of transmission of analyser and polarizer
Asked by dixit0628 | 14 Feb, 2018, 10:15: AM
answered-by-expert Expert Answer
Law of Malus:- 

If light is passing through two polaroids P1 and P2 and θ is the angle made by P2 with pass-axis of P1, then intensity of the light that comes out of P2 is given as I = I0cos2θ where I0 is the incident light intensity at P1.
 
Table for Intensity ratio for different angle θ
 
θ(degrees)      I/I0 = cos2θ    
-----------------------------------
0                                 1
30                                0.75
45                                0.5
60                                0.25
90                                0
 
The plot is given below
 


Answered by Thiyagarajan K | 14 Feb, 2018, 11:56: AM

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