homework help. show all work Homework #8 roblem 25.39- MC 10 of 10 Constants Par

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Homework #8 roblem 25.39- MC 10 of 10 Constants PartA The polarization of a helium-neon laser can change with time. The light from a laser is initially horizontally polarized, as the laser warms up, the light changes to be vertically polarized. Suppose the laser beam passes through a polarizer whose axis is 28 ° from horizontal By what percent does the light intensity transmitted through the polarizer change as the laser warms up? Express your answer using three significant figures. If the transmitted intensity decreases as the laser warms up, please enter your answer as a negative number. View Available Hint(s) warm cold cold Submit vious Answers Request Answer X Incorrect; Try Again

Explanation / Answer

so when horizontal polarized

I /I0 = cos(28-0)^2= 0.78

but when vertical polarized

I/I0 = cos(28-90)^2 = 0.22

so percentage decrease = (0.78-0.22)/0.78 = 71.79 %

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