Question

why should we use fluorescent tubes in place of filament bulbs ?

Answer 1

flurocent tubes consume less electricity and gives more and luminous light

Answer 2

Fluorescent lamps also do not produce as much heat as traditional lighting options. They make about 75% less heat compared to an incandescent bulb because they are not using resistance to emit light. That also results in an energy savings, and also helps to keep whatever room they are in at a cooler temperature.