A monochromatic beam of light (lamda=4900 A) incident normally up on a surface produces a pressure of 5x10^7N/m^2 on it.Assuming that 25% of the incident light is reflected and the rest absorbed.Find the number of photons falling per second on a unit area of thin surface???

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Arun Kumar · Answer

Hello P_absorb=E_(intensity)/c P_reflect=2E_(intensity)/c E_(intensity)=n*hc/lambda per unit area we can get n from here Thanks & Regards Arun Kumar Btech, IIT Delhi Askiitians Faculty

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A monochromatic beam of light (lamda=4900 A) incident normally up on a surface produces a pressure of 5x10^7N/m^2 on it.Assuming that 25% of the incident light is reflected and the rest absorbed.Find the number of photons falling per second on a unit area of thin surface???

A monochromatic beam of light (lamda=4900 A) incident normally up on a surface produces a pressure of 5x10^7N/m^2 on it.Assuming that 25% of the incident light is reflected and the rest absorbed.Find the number of photons falling per second on a unit area of thin surface???

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A monochromatic beam of light (lamda=4900 A) incident normally up on a surface produces a pressure of 5x10^7N/m^2 on it.Assuming that 25% of the incident light is reflected and the rest absorbed.Find the number of photons falling per second on a unit area of thin surface???

A monochromatic beam of light (lamda=4900 A) incident normally up on a surface produces a pressure of 5x10^7N/m^2 on it.Assuming that 25% of the incident light is reflected and the rest absorbed.Find the number of photons falling per second on a unit area of thin surface???

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