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The sun gives light at the rate of 1500 W/m2 of area perpendicular to the direction of light. Assume the wavelength of light as 5000Å. Calculate the number of photons/s arriving at 1 m2 area at that part of the earth.

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MCQs on electron emission, photoelectric effect and its experimental studies, light photoelectric and wave theories, einstein photoelectric equations, photon, matter wave nature, davisson and germer experiments.


The sun gives light at the rate of 1500 W/m<sup>2</sup> of area perpendicular to the direction of light. Assume the wavelength of light as 5000Å. Calculate the number of photons/s arriving at 1 m<sup>2</sup> area at that part of the earth.






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