Q.

The critical angle for total internal reflection for a substance is 450 . What is the polarizing angle for this substance ?

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a

tan−112

b

54044'

c

450

d

670

answer is B.

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Detailed Solution

We know, relation between polarizing angle and critical angle    tanθP=1sinCWhere θp  is the angle of polarization and c  is the critical angle for total internal reflection So,   tan θp=1sin45     tan θp=2θP=tan−1(2)θp=tan−1(2)=54044'∴  θp=54044'
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The critical angle for total internal reflection for a substance is 450 . What is the polarizing angle for this substance ?