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Homework Statement
Three polarizing filters are stacked, with the polarizing axis of the second and third filters at angles of 17.4^\circ and 59.8^\circ, respectively, to that of the first. If unpolarized light is incident on the stack, the light has an intensity of 74.0 W/cm^2 after it passes through the stack.
If the incident intensity is kept constant, what is the intensity of the light after it has passed through the stack if the second polarizer is removed?
Im getting the original Intensity to be 421.
Anyone help me with this?
regards