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Q.

[105]
Is it true that tungsten is used almost exclusively for filament of electric lamps?

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a

True

b

False

answer is A.

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Detailed Solution

The above statement is True.
The filament is the little wire within an electric bulb that emits light. Tungsten is used for the filament of electric lamps due to its high melting point, about

33800 ° C .

Also, tungsten can hold high power passing through it. No other material has such a melting point suitable for the filament of electric lamps. Electric current causes the filament to heat up and glow due to its high resistance, which illuminates the room.

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