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energy for one photon = hc/wavelength=E
that of n photons = n*E
100 watt means 100 joules per second
so just solve n*E=100 ( everything in s.I units)
final answer will be n=2.0*10^20 photons
that of n photons = n*E
100 watt means 100 joules per second
so just solve n*E=100 ( everything in s.I units)
final answer will be n=2.0*10^20 photons
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Here is your answer. hope you have got it .
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