Multiple Choice Questions on What is the difference between a CFL and an LED lamp 1 To produce light a C........... for PCS Exam Preparation

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Multiple Choice Questions

What is the difference between a CFL and an LED lamp 1 To produce light a C...........

Everyday Science (PCS) Physics
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    What is the difference between a CFL and an LED lamp ?

    1.To  produce  light,  a  CFL  usesmercury  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

    3.A CFL is less energy-efficient as compared to an LED lamp

    Which of the statements given aboveis/are correct ?

    This questions was previously asked in
    PCS Previous year General Studies paper (2018)
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    1 only

    Incorrect Answer

    2 and 3 only

    Incorrect Answer

    1 and 3 only

    Correct Answer

    1, 2 and 3

    Incorrect Answer
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    Explanation:

    With a lifespan of approximately 25,000–35,000 hours, an LED bulb lasts 2 to 4 times longer than a CFL, and 25 to 35 times longer than a standard incandescent bulb.

    By: Dr. Vivek Rana
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