ch38-p007 - 7. (a) Let R be the rate of photon emission...

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(b) Let R be the rate of photon production for the 700 nm lamp. Then, R P hc == ×⋅ λ 700 400 160 10 1240 141 10 19 21 nm J / s J / eV eV nm photon / s. bg b g c hb g . . 7. (a) Let R be the rate of photon emission (number of photons emitted per unit time) and let E be the energy of a single photon. Then, the power output of a lamp is given by P = RE if all the power goes into photon production. Now,
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