What is the full form of LED which is commonly used in bulbs, TVs etc to save energy?

Light Emitting Diode

The correct answer is option 2: Light Emitting Diode

These days LED (Light Emitting Diode) lamps are promoted throughout the country to save energy. The LED bulb uses one-tenth energy as an incandescent bulb and half as much as a CFL to produce the same amount of light.