The filament of electric bulb is generally made of tungsten because
tungsten is cheap
durability of tungsten is high
light-emitting power of tungsten is high
melting point of tungsten is high
Answer is Right!
Answer is Wrong!
This question was previously asked in
UPSC CAPF – 2013
Incandescent light bulbs produce light by heating a wire filament to a very high temperature (around 2500-3000 °C) until it glows (incandescence). Tungsten has the highest melting point of all metals (3422 °C), allowing it to withstand these extreme temperatures without melting. This property is crucial for the filament’s operation.