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JEE Main & Advanced Physics Photo Electric Effect, X- Rays & Matter Waves Question Bank Numerical Value Type Questions - Dual Nature of Radiation and Matter

  • 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 \[h=6.6\times {{10}^{-34}}Js,\] speed of light \[c=3.0\times {{10}^{8}}m/s\]]

    Answer:

    \[\left( 5\times {{10}^{15}} \right)\]


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