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The filament of an electric bulb is made...

The filament of an electric bulb is made of tungsten.

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The intensity of light emitted by the filament of a bulb depends on the temperature of the filament. It increases with the temperature. (2) The melting point of the material used to make the filament of a bulb should be very high so that the filament can be heated to a high temperature by passing a current through it, without melting it. This enables us to obtain more light. The melting point of tungsten is very high. Hence, tungsten is used to make a solenoid type coil (filament) in an electric bulb.
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