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ID: 1786017 • Letter: Y
Question
You must show and explain all work in a neat and organized way to receive credit, and you must turn in this sheet. Please show each step in calculations 1. What is the difference between polarized and unpolarized light? (5 pts) 2. Light shines through two polarizers. Initially both transmission axes are aligned and then the second polarizer is rotated while the other remains fixed. Sketch the intensity of the transmitted light as a function of the angle through which the second polarizer is rotated. Please give detailed explanation for your results. (10 pts) 90 180 270 360 Degrees 3. Unpolarized light with an intensity of 26.4 lux passes through a polarizer whose transmission axis is vertically oriented. What is the direction of polarized beam and intensity of the transmitted light? If the polarizer's transmission axis is at an angle of 69.0 with the vertical, what is the intensity of the transmitted light and its? (15 pts) 4. Vertically polarized light with an intensity of 36.8 lux passes through a polarizer whose transmission axis is an angle of 51.0° with the vertical. What is the intensity and direction of transmitted light? If the second polarizer whose transmission axis is an angle of 88.0° with the vertical is placed after first polarizer, what is the intensity of transmitted light? (15 pts) 5. Light from an incandescent source transmits through a polarizer whose transmission axis makes an angle of 37.0° with respect to the vertical; i. e., the 37.0-degree mark on the polarizer lines up with the index mark on the component carrier. The light intensity after passing through the polarizer is 71.3 lux. (a) At what angle would you need to set a second polarizer in order to have no light transmitted through the second polarizer? (b) At what angle would you need to set the second polarizer to obtain a light intensity of 23.4 lux? Assume the polarizers are ideal. (15 pts)Explanation / Answer
Polarised light: Imagine a wave travelling through space. If the wave is a mechanical wave, particles get affected by the wave and oscillate. If the particles oscillate on a line perpendicular to the direction of propagation, the wave is said to be linearly polarized. If the particles trace out an ellipse on a plane perpendicular to the movement of propagation, the wave is an elliptically polarized wave. If the particle traces a circle on a plane perpendicular to the direction of propagation, then the wave is said to be circular polarised.
Non polarised light: Any source of light generated as photons have random directions of oscillations with respect to the direction of propagation. Un-polarized light has intensity components at every direction, at all times. If un-polarized light is sent through a polarizer, polarized light can be obtained.
Polarized light
Unpolarized light
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Polarized light
Unpolarized light
The oscillation is confined to only one plane. The oscillation occur in many plane It is absolutely coherent in nature. It is incoherent in nature. Its intensity depends on the nature of Polaroid used. Its intensity depends on the nature of source. In polarized light electric vector is confined to a plane and magnetic vector H is normal to the plane In Unpolarized light plane of vibration of electric vector continuously and C random change.Related Questions
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