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 semiconductor 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 ?
(a) 1 only (b) 2 and 3 only (c) 1 and 3 only (d) 1, 2 and 3
