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Question:

which color is power of light?

a color which is regarded as power of light

Answer:

What are you talking about, the power of light? that's a stupid question beause there is no such thing as ''The power of light'' White light is made up of the entire visible light spectrum. Light is made up frequencies of electromagnetic waves.
How do you define power of light ? Light does have some power, since it has energy. For example, a 100 watt light may emit 5 watts of light, that is a power of 5 watts. (the other 95 watts is wasted as heat) But power is measured in watts, and has no color. Like asking what color is an inch. Meaningless. edit: or are you using power in the sense of exponent? But the term exponent of light is pretty meaningless also. .

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