Part A A 50 mW laser beam is polarized horizontally. It then passes through two polarizers. The axis of the first polarizer is oriented at 30° from the horizontal, and that of the second is oriented at 60° from the What is the power of the transmitted beam? horizontal. Express your answer with the appropriate units. P = Value Units Submit Request Answer Provide Feedback

Part A A 50 mW laser beam is polarized horizontally. It then passes through two polarizers. The axis of the first polarizer is oriented at 30° from the horizontal, and that of the second is oriented at 60° from the What is the power of the transmitted beam? horizontal. Express your answer with the appropriate units. P = Value Units Submit Request Answer Provide Feedback

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter24: Electromagnetic Waves

Section: Chapter Questions

Problem 4OQ: If plane polarized light is sent through two polarizers, the first at 45 to the original plane of...

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Certain sunglasses use a polarizing material to reduce the intensity of light reflected as glare front water or automobile windshields. What orientation should the polarizing filters haw to be most effective? (a) The polarizers should absorb light with its electric field horizontal. (b) The polarizers should absorb light with its electric field vertical. (c) The polarizers should absorb both horizontal and vertical electric fields. (d) The polarizers should not absorb either horizontal or vertical electric fields.
Unpolarized light passes through two Polaroid sheets. The transmission axis of the analyzer makes an angle of 53.0 with the axis of the polarizer. (a) What fraction of the original unpolarized light is transmitted through the analyzer? (b) What fraction of the original light is absorbed by the analyzer?
If plane polarized light is sent through two polarizers, the first at 45 to the original plane of polarization and the second at 90 to the original plane of polarization, what fraction of the original polarized intensity passes through the last polarizer? (a) 0 (b) 14 (c) 12 (d) 18 (e) 110
Unpolarized light passes through three polarizing filters. The first filter has its transmission axis parallel to the z direction, the second has its transmission axis at an angle of 30.0 from the z direction, and the third has its transmission axis at an angle of 60.0 from the z direction. If the light that emerges from the third filter has an intensity of 250.0 W/m2, what is the original intensity of the light?
Unpolarized light passes through two Polaroid sheets. The transmission axis of the analyzer makes an angle of 53.0 with the axis of the polarizer. (a) What fraction of the original unpolarized light is transmitted through the analyzer? (b) What fraction of the original light is absorbed by the analyzer?
What is the maximum electric field strength in an electromagnetic wave that has a maximum magnetic field strength of 5.00104T (about 10 times the Earth’s)?
Integrated Concepts (a) On a day when the intensity of sunlight is 1.00 kW/m2, a circular lens 0.200 m in diameter focuses light onto water in a black beaker. Two polarizing sheets of plastic are placed in front of the lens with their axes at an angle of 20.0°. Assuming the sunlight is un-polarized and the polarizers are 100% efficient, what is the initial rate of heating of the water in °C/s, assuming it is 80.0% absorbed? The aluminum beaker has a mass of 30.0 grams and contains 250 grams of water. (b) Do the polarizing filters get hot? Explain.
While you are looking through two polarizing sheets, one of the sheets is rotated 180. Will there be any change in what you observe? Explain.
Should the straight wire antenna of a radio he vertical or horizontal to best receive radio waves broadcast by a vertical transmitter antenna? How should a loop antenna be aligned to best receive the signals? (Note that the direction at the loop that produces the best reception can he used to determine the location at the source. It is used for that purpose in hacking tagged animals in nature studies, for example.)
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The maximum magnetic field strength of an electromagnetic field is 5106T. Calculate the maximum electric field strength if the wave is traveling in a medium in which the speed of the wave is 0.75c.
Assume the helium-neon lasers commonly used in student physics laboratories have power outputs of 0.500 mW. (a) If such a laser beam is projected onto a circular spot 1.00 mm in diameter, what Is its Intensity? (b) Find the peak magnetic field strength. (C) Find the peak electric field strength.