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Question
Which of the following is invented by Thomas Alva Edison?
Which of the following is invented by Thomas Alva Edison?
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Solution
The correct option is C Bulb
Electric bulb was first invented by Thomas Alva Edison. He made a glass casing and fitted a filament of platinum wire in it. He then removed all the air from within the glass casing. He passed an electric current through the wire and, to his delight, the bulb lit up and did not burn out for eight long minutes.
Electric bulb was first invented by Thomas Alva Edison. He made a glass casing and fitted a filament of platinum wire in it. He then removed all the air from within the glass casing. He passed an electric current through the wire and, to his delight, the bulb lit up and did not burn out for eight long minutes.
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