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UPSC Physics Electric Current and Magnetism Question Bank Electricity, Magnetism and Light

  • question_answer
          Which one among the following is the correct order of power consumption for light of equal intensity?                            [NDA]

    A) CFL tube < Fluorescent tube < Incandescent bulb < Light emitting diode

    B) Light emitting diode < CFL tube < Fluorescent tube < Incandescent bulb

    C) CFL tube < Fluorescent tube < Light emitting diode < Incandescent bulb

    D) Incandescent bulb < Light emitting diode < Fluorescent tube < CFL tube

    Correct Answer: B

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