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Chrome File Edit View History Bookmarks Window People Help 38% Thu 11:57 AM Q :E Big Sean Blessings (E x y WA GRADED Assignment 7 x CLight Polarized In The x R g unpolarized light of intensit x C Chegg Study I Guided Sol x www.webassign.net/web/Student/Assignment-Responses/submit?dep 10627919 YouTube Home Chegg.com App board Learn WSU Pip Log rtWork V WebAssign LOG IN CHASE B 9.11 x 10 v/m 3.00 x 10 V/m 4. -120 points GRRPhys2 22.TB.053 My Notes Ask Your Teacher Unpolarized light of intensity Io is sent through 4 polarizers, each of the last three rotated 30 from the previous polarizer so that the last polarize r is perpendicular to the first What is the intensity transmitted by this system? 0.75 I 0.50 I 0.42 I 0.21 I 0.00 Submit Answer Save Progress 5. C+ 20/20 points l Previous Answers GRRPhys2 20.TB.023 My Notes Ask Your Teacher The north end of a bar magnet is pushed downward toward a wire loop in the plane of the paper. In which direction is the induced current, and which way is the induced magnetic field? clockwise, into the paper O clockwise, out of the paper

Explanation / Answer

Unpolarized light passes through 3 polarizers

The first and last polarizers are oriented at 90? with respect to each other.

The second 2polarizer has its polarization axis rotated an angle ? from the first polarizer. Therefore, the third polarizer is rotated an angle ? /2 ? ? from the second polarizer.

The intensity after passing through the first polarizer is I1 and the intensity after passing through the second polarizer, I2, is given by:

I2 = I1 cos2 ?

The intensity after the third polarizer, I3, is given by

: I3 = I2 cos2 (?/ 2 ? ?)

I1 =I0cos2? cos2( ?/ 2 ? ? )

? =30

=3/4 *I0

=0.75I0

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