What is the difference between a CFL and a LED lamp?
- To produce light, a CFL uses mercury vapour and phosphor while an LED lamp uses semiconductor material.
- The average lifespan of a CFL is much longer than that of a LED lamp.
- A CFL is less energy efficient as compared to an LED lamp.
Which of the statements given above is/are correct?
- 1 only
- 2 and 3 only
- 1 and 3 only
- 1, 2 and 3
Explanation
Statement 1 is correct
- A fluorescent lamp is a low-pressure discharge lamp filled with a noble gas and a small amount of mercury. It operates by converting electrical power into UV radiation through the use of mercury atoms, which is then converted to visible light by a phosphor coating.
- In contrast, a Light Emitting Diode (LED) functions using a semiconductor material that emits light directly when an electric current passes through it—a phenomenon known as electroluminescence.
Statement 2 is incorrect
- LED lights can last for three times longer than most CFLs.
Statement 3 is correct
- LEDs use less power to produce the same amount of light and have less heat loss.
