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What is power (in watt) of a light source emitting `3.125 xx 10^(18)` photons per second, while the wavelength of light is `620 nm` ? (use `hc = 12400 eVÅ`) |
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Answer» Correct Answer - `1` Let the power be `x` wants. No. of photons emitted per second `xx` Energy of `1` photon `=` Total energy `:. 3.125 xx 10^(18) xx (12400)/(6200) = (x)/(1.6 xx 10^(-19)` `:. x = 1` |
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