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JEE Main & Advanced Physics Photo Electric Effect, X- Rays & Matter Waves Question Bank Self Evaluation Test - Dual Nature of Radiation and Matter

  • question_answer
    A mono chromatic source of light operating at 400 w emits \[8\times {{10}^{20}}\] photons per second, the wavelength of light is

    A) 100nm

    B) 200nm

    C) 300nm

    D) 400nm

    Correct Answer: D

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