12th Class Physics Photo Electric Effect, X- Rays & Matter Waves

  • question_answer 5)
    The energy flux of sunlight reaching the surface of the earth is  How many photons (nearly) per square metre are incident on the Earth per second ? Assume that the photons in the sunlight have an average wavelength of 550 nm

    Answer:

    Given, Energy flux Also. and  energy of each photon E   no. of photons per square metre of earth  


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