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?

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With reference to the sectors of the Indian economy, consider the following pairs: How many…