What is the function of tube light?

Answer 1

The function of tube light is to give energy in the form of heat and light. It enables us to see objects in the dark.

Do you want to know how light tube glows?

When we supply the power to the tube lite, the cathode of the tube rod gets heated up. The inner surface of the tube rod is covered with phosphuorent * fluorescent) and is filled with gas under less pressure. Gas can be Neon, Krypton or Argon. When the tungsten heats up it also excites the electrons of the fluorescent. During excitation and de-excitation, energy in the form of light is released. The wavelength of that light lies in the visible range of our eyes. Since air under less pressure becomes conducting, it conducts electrons from one side to the other, thus creating an anode and a cathode.