Light Unit Practice Problems 6

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6th Hour

7th Hour

A beam of horizontally polarized light passes through a polarizer whose transmission axis is at an angle of 35.0 with the vertical. if the intensity of the transmitted light is 0.55 W/m^3, what was the initial intensity of the beam? *

Vertically polarized light encounters a polarizer. At what angle to the vertical should the polarizer be aligned if the transmitted light is to have half the intensity of the incident beam? *

If the angle in the last quick example is increased slightly, does the final intensity of the light beam increase, decrease, or stay the same? Check your answer by finding the final intensity for 60.0 degrees. *

Unpolarized light passes through two polarizers whose transmission axes are at an angle of 30.0 with respect to each other. What fraction of the light’s initial intensity is transmitted through the polarizers? *

Vertically polarized light with an intensity of 1.2 W/m^2 passes through a polarizer whose transmission axis is at an angle of 35 degrees to the vertical. It then passes through a second polarizer whose transmission axis is at an angle of 45 to the first polarizer. What is the final intensity of the light? *

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