JEE Main & Advanced Physics Photo Electric Effect, X- Rays & Matter Waves JEE PYQ-Photo Electric Effect X-rays

  • question_answer
    A 2 mW laser operates at a wavelength of 500 nm. The number of photons that will be emitted per second is : [Given Planck's constant  speed of light ] [JEE Main 10-4-2019 Afternoon]

    A)

    B)

    C)

    D)

    Correct Answer: C

    Solution :


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