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Physics, 17.08.2021 01:00 kealinwiley
The efficiency of a light source is the percentage of its energy input that gets radiated as visible light. If some of the blue light in an LED is used to cause a fluorescent material to glow, A. The overall efficiency of the LED is increased. B. The overall efficiency of the LED does not change. C. The overall efficiency of the LED decreases.
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