The fraction of intensity transmitted for the given case.
Explanation of Solution
Write expression for intensity of the light after passing through first polarizer.
Here,
Write expression for intensity of light after passing through second polarizer.
Here,
Write expression for intensity of light after passing through third polarizer.
Here,
Substitute
Write expression for fraction of intensity passed.
Conclusion:
Substitute
Substitute
Substitute
Thus, the fraction of intensity passed is
(b)
The fraction of intensity transmitted for given case.
(b)
Explanation of Solution
Write expression for intensity of the light after passing through first polarizer.
Here,
Write expression for intensity of light after passing through second polarizer.
Here,
Write expression for intensity of light after passing through third polarizer.
Here,
Substitute
Write expression for fraction of intensity passed.
Conclusion:
Substitute
Substitute
Substitute
Thus, the fraction of intensity passed is
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Chapter 23 Solutions
General Physics, 2nd Edition
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- If a polarizing filter reduces the intensity of polarized light to 50.0% of its original value, by how much are the electric and magnetic fields reduced?arrow_forwardIn Figure P37.52, suppose the transmission axes of the left and right polarizing disks are perpendicular to each other. Also, let the center disk be rotated on the common axis with an angular speed . Show that if unpolarized light is incident on the left disk with an intensity Imax, the intensity of the beam emerging from the right disk is I=116Imax(1cos4t) This result means that the intensity of the emerging beam is modulated at a rate four times the rate of rotation of the center disk. Suggestion: Use the trigonometric identities cos2=12(1+cos2) and sin2=12(1cos2). Figure P37.52arrow_forwardTwo radio antennas separated by d = 3.00 102 cm. as shown in Figure P24.7, simultaneously broadcast identical signals at the same the signals. (a) If the car is at the position of the second maximum wavelength. A car travels due north along a straight line at position x = 1.00 103 m from the center point between the antennas and its radio receives the signal. (a) If the car is at the position of the second maximum after that at point O when it has traveled a distance of y = 4.00 102 m northward, what is the wavelength of the signals? (b) How much farther must the car travel from thus position to encounter the next minimum in reception? Hint: Do not use the small-angle approximation in this problem.arrow_forward
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