General Studies I
What is the difference between a CFL and an LED lamp ?
1. To produce light, a CFL uses mercury vapour’ and phosphor while an LED lamp uses semi-conductor material.
2. The average life span of a CFL is much longer than that of an LED lamp.
3. A CFL is less energy-efficient as compared to an LED lamp.
Which of the statements given above is/are correct?
|B||2 and 3 only|
|C||1 and 3 only|
|D||1, 2 and 3|