Engine_2014 : Electricity - 1616/2299
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| What is the purpose of the inner phosphor coating of the fluorescent tube as shown in figure "A" of the illustration? |
| A) absorb visible ultraviolet light and emit visible white light |
| B) absorb visible ultraviolet light and emit invisible white light |
| C) absorb invisible ultraviolet light and emit visible white light |
| D) absorb invisible ultraviolet light and emit invisible white light |
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Illustration EL-0081
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