Optics Question 549

Question: A polaroid is placed at 45o to an incoming light of intensity $ I _{0} $ . Now the intensity of light passing through polaroid after polarization would be

[CPMT 1995]

Options:

A) $ I _{0} $

B) $ I _{0}/2 $

C) $ I _{0}/4 $

D) Zero

Show Answer

Answer:

Correct Answer: B

Solution:

$ I=I _{0}{{\cos }^{2}}\theta $ = I0 cos2 45 $ =\frac{I _{0}}{2} $



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