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    Bi-color LED and colored filters

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    A bi-color LED alternates so that the color red emits at 60Hz and the color green emits at 60 Hz, so that visually it appears yellow.

    What frequency would it blink if you viewed it through a yellow filter?
    What frequency would it blink if you viewed it through a green filter?

    © BrainMass Inc. brainmass.com October 9, 2019, 5:10 pm ad1c9bdddf
    https://brainmass.com/physics/colour/49790

    Solution Preview

    If you viewed it through a sufficiently narrow yellow filter, you would see it black, as both the red and the green bases would be filtered out. Therefore it will not blink at all, staying steadily ...

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