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Which color in the color spectrum has the longest wave-length?
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Red
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Yellow
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Blue
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It's Wrong!
Red has the longest wavelength in the color spectrum. This is because red light has a lower frequency and lower energy compared to other colors. When light waves pass through a prism, they are separated into different colors based on their wavelengths. Red light has the longest wavelength, followed by orange, yellow, green, blue, indigo, and violet.