Answers

2015-06-20T12:05:47+05:30
For long lasting bulbs, tungsten is really important because it has a high melting point and can't be easily melted. (melting point:3422°C)

Hope it helped! :-)

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2015-06-20T13:31:26+05:30
Because it has very high melting point so it will not melt easily.
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