What happens when red colour is incidented on a prism?
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These colors are often observed as light passes through a triangular prism. Upon passage through the prism, the white light is separated into its component colors - red, orange, yellow, green, blue and violet.
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It depends on the source of the red light, whether it is from an LED, laser or any other source. If it is from a laser, the light will be composed of photons of almost same frequencies and hence there will be a very small spectrum. This is because even in lasers, the light produced is not totally monochromatic in most cases. Whereas in the case of LEDs, the light produced , even though it seems like red to us, is not monochromatic. There is a wide range of frequencies that come out of an LED. Hence there will be a broader spectrum coming out of the prism (all red colour)
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