1.

In a tungsten electric-bulb, a coil ofwire, rather than a straight wire, is used.

Answer»

Solution :A coil of wire has MUCH greater surfacearea than a STRAIGHT wire if enclosed in the samebulb. This results in more emission of LIGHT.
Hence, in a tungsten electric-bulb, a coil ofwire, RATHER than a straight wire, is USED.


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