Question

Why is the tungstan metal selected for making filaments of incandescent lamp?

Answer 1

because tungsten metal does not melt and it glows for continously.

Answer 2

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The melting point and resistivity of tungsten are very high. It does not burn very easy at a high temperature. The electric lamps glow at very high temperatures. Hence, tungsten is mainly used as heating element of electric bulbs.

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