Name any two device that are used to produce light?
Answers
Answered by
2
Answer:
torch light
lamp
tube lights
LED etc are sources of light
Answered by
0
Answer:
Electric current
Gas-discharge lamps
LED lamps
Explanation:
The three main categories of electric lights are incandescent lamps, which produce light by a filament heated white-hot by electric current, gas-discharge lamps, which produce light by means of an electric arc through a gas, and LED lamps, which produce light by a flow of electrons across a band gap in a semiconductor.
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