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Nitrogen laser produces a radiation at a...

Nitrogen laser produces a radiation at a wavelength of `337.1nm`. If the number of photons emitted is `5.6 xx 10^(24)`. Calculate the energy of this laser

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`E = N hv Nh (c)/(lamda) = ((5.6 xx 10^(24)) (6.626 xx 10^(-34) Js) (3.0 xx 10^(8) ms^(-1)))/((337.1 xx 10^(-9) m)) = 3.3 xx 10^(6) J`
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