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1 mole of photons, each of frequency 250s^–1 would have approximately a total energy of __ erg.(h = 6.6 x 10^-27erg-sec)

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Detailed Solution

$E = nh ϑ = 6 \times 10^{23} \times 6.6 \times 10^{- 27} \times 250 = 1 erg$

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