polarizing sheets are arranged such that each makes an angle with the preceding sheet. An unpolarized light of intensity is incident into this arrangement. The output intensity is found to be . The value of will be [2023]

STUDY MATERIALS
COURSES
MORE
SUCCESS STORY
ADMISSION
STORE

Back

JEE ADVANCE

CLASS XI - XII
CRASH COURSE

CLASS XI - XII

CRASH COURSE

JEE MAIN

CLASS XI - XII
CRASH COURSE

CLASS XI - XII

CRASH COURSE

NEET

CLASS XI - XII
CRASH COURSE

CLASS XI - XII

CRASH COURSE

BITSAT

CLASS XI - XII

CLASS XI - XII

CBSE BOARD

CLASS IX

CLASS X

CLASS XI

CLASS XII

CLASS VI

CLASS VII

CLASS VIII

UP BOARD

CLASS IX
CLASS X
CLASS XI
CLASS XII

CLASS IX

CLASS X

CLASS XI

CLASS XII

CUET

CRASH COURSE

CRASH COURSE

Courses

CLASSROOM COURSES
ONLINE COURSES

ONLINE COURSES

More

Solution

Q.
$' n'$ polarizing sheets are arranged such that each makes an angle $45 °$ with the preceding sheet. An unpolarized light of intensity $I$ is incident into this arrangement. The output intensity is found to be $\frac{I}{64}$ . The value of $n$ will be [2023]

1 3

2 6

3 5

4 4

Ans.
(2)

$After passing through first sheet I_{1} = \frac{l}{2}$

$After passing through second sheet$

$I_{2} = I_{1} \cos^{2} (45 °) = \frac{l}{4}$

$After passing through n^{th} sheet$

$I_{n} = \frac{I}{2^{n}} = \frac{I}{64} \Rightarrow n = 6$

Want Us to Email you About Special Offers & Updates?