CFLs use 25–35% less energy than incandescent bulbs, however LEDs are the best option if you want to have the most positive environmental impact.
Question : Identify the sealed glass vacuum tube containing an electron beam that is focused on a phosphor-coated glass screen when light is emitted.
Option 1: Cathode ray tube
Option 2: Flat array tube
Option 3: Light Emitting Diode tube
Option 4: Liquid Crystal Display tube
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