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Q.

$' n'$ polarizing sheets are arranged such that each makes an angle $45^{\circ}$ with the preceding sheet. An unpolarized light of intensity I is incident into this arrangement. The output intensity is found to be I/32.The value of n will be:

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a

6

b

3

c

4

d

5

answer is C.

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Detailed Solution

$I = \frac{I_{0}}{2} \cos^{2} θ$

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