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?

1. Statement 1 is correct: A Compact Fluorescent Lamp (CFL) works by passing an electric current through mercury vapour, which produces ultraviolet light. This UV light then excites a phosphor coating inside the bulb, causing it to emit visible light. A Light Emitting Diode (LED) lamp produces light through electroluminescence in a semi-conductor material (the diode) when electricity is passed through it. 2. Statement 2 is incorrect: The average life span of an LED lamp is significantly longer than that of a CFL. LEDs typically last 25,000-50,000 hours or more, whereas CFLs usually last around 8,000-10,000 hours. 3. Statement 3 is correct: LED lamps are generally more energy-efficient than CFLs. They convert a higher percentage of electrical energy into visible light, requiring less power to produce the same amount of illumination (lumens). Therefore, a CFL is less energy-efficient as compared to an LED lamp. Hence, statements 1 and 3 correctly state the differences.