Conceptual Physical Science (6th Edition)
6th Edition
ISBN: 9780134060491
Author: Paul G. Hewitt, John A. Suchocki, Leslie A. Hewitt
Publisher: PEARSON
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Textbook Question
Chapter 11, Problem 30RCQ
How much unpolarized light does an ideal Polaroid filter transmit?
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What angle (in degrees) is needed between the direction of polarized light and the axis of a polarizing filter to cut its intensity to one-sixth of its initial value?
Unpolarized light passes through two Polaroid sheets. The transmission axis of the analyzer makes an angle of 50.0° with the axis of the polarizer.
(a) What fraction of the original unpolarized light is transmitted through the analyzer? (Enter your answer to at least three decimal places.) (b) What fraction of the original light is absorbed by the analyzer?
Unpolarized light passes through two Polaroid sheets. The transmission axis of the analyzer makes an angle of 43.7° with the axis of the polarizer.(a) What fraction of the original unpolarized light is transmitted through the analyzer? (Enter your answer to at least three decimal places.)
(b) What fraction of the original light is absorbed by the analyzer?
Chapter 11 Solutions
Conceptual Physical Science (6th Edition)
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- An unpolarized beam of light is incident on a stack of ideal polarizing filters. The axis of the first filter is perpendicular to the axis of the last filter in the stack. Find the fraction by which the transmitted beams intensity is reduced in the three following cases. (a) Three filters are in the stack, each with its transmission axis at 45.0 relative to the preceding filter. (b) Four filters are in the stack, each with its transmission axis at 30.0 relative to the preceding filter. (c) Seven filters are in the stack, each with its transmission axis at 15.0 relative to the preceding filter. (d) Comment on comparing the answers to parts (a), (b), and (c).arrow_forwardIf 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_forwardWhat angle is needed between the direction of polarized light and the axis of a polarizing filter to cut its intensity in half?arrow_forward
- Three polarizing sheets are placed together such that the transmission axis of the second sheet is oriented at 25.0° to the axis of the first, whereas the transmission axis of the third sheet is oriented at 40.0° (in the same sense) to the axis of the first. What fraction of an intensity of an incident unpolarized beam is transmitted by the combination?arrow_forwardGiven that 100 W/m? of a randomly polarized (unpolarized) light is incident normally on a stack of ideal linear polarizers that are positioned one behind the other with the transmission axis of the first vertical, the second at 30° from the vertical, the third at 60° from the vertical and the fourth at 90° from the vertical axis. How much light emerges after each polarizer?arrow_forwardWhen unpolarised light is passed through a polariser, and then through an analyser with its polarising axis at a right angle to the axis of the polariser, the intensity of the remaining light is approximately zero. When a second polarising sheet is placed between the polariser and the analyser, the final intensity is much brighter and clearly non-zero. Explain how this can happen.arrow_forward
- Unpolarized light with intensity 350 W/m² passes first through a polarizing filter with its axis vertical, then through a second polarizing filter. It emerges from the second filter with intensity 131 W/m². What is the angle from vertical of the axis of the second polarizing filter?arrow_forwardUnpolarized light passes through two ideal polarizers. The axis of the first is vertical, and the axis of the second is at 70° to the vertical. What fraction of the incident light is transmitted through both polarizers? 0.342 0.171 0.0585 0.117arrow_forward10. Three polarizing disks have planes that are parallel and centered on a common axis. The direction of the transmission axis (dashed line) in each case is shown relative to the common vertical direction. A polarized beam of light (with its axis of polarization parallel to the horizontal reference direction) is incident from the left on the first disk with intensity S 780 W/m². Calculate the transmitted intensity if 0₁23.0°, 0 = 32.0°, and 0,= 43.0°. x 28.9 W/m²arrow_forward
- Nonpolarized sunlight hits the pair of sunglasses you're wearing. If we can treat the glasses as an ideal Polaroid filter, how much light is transmitted through the glasses to hit your eye?arrow_forwardUnpolarized light falls on a polarizer with its axis in the vertical direction, then a second with its axis 30 degrees from vertical. What fraction on the intensity goes through the two filters? Please give your answer as a percent (multiply the ratio by 100).arrow_forwardA polarizer reduces the intensity of light by a factor of 0.5. At what angle should the analyzer be oriented so the average intensity of light leaving the analyzer is reduced to 0.10?arrow_forward
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