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As far as I know, you will not be provided the wavelengths, so you should know the general ranges. You most likely will not need to know the specific colors of visible light, like red or green. Also, it may be helpful to know the spectrum in order of lowest to highest frequency.
I took the test today, and we were not provided with the wavelengths. You should have a general idea of the sizes though--for example, x-rays<UV<visible light<infrared<microwaves. The front of the test only has constants and equations, as it did for the previous test.
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