A) \[3\,\,\times \,\,1{{0}^{10}}\]
B) \[5\,\,\times \,\,1{{0}^{15}}\]
C) \[7\,\,\times \,\,1{{0}^{12}}\]
D) \[9\,\,\times \,\,1{{0}^{12}}\]
Correct Answer: B
Solution :
As energy, \[\operatorname{E}=h\nu =6.63\times 1{{0}^{-\,34}}\,\times 6.0 \times 1{{0}^{14}}\] \[=\,\,3.98\times 1{{0}^{-}}^{19}\,J\] Now, number of photons emitted per second \[n=\frac{p}{E}\] \[=\,\,\,\frac{2.0\times {{10}^{-\,3}}\,W}{3.98\times {{10}^{-\,19}}\,J}\] \[= \,\,5 \times 1{{0}^{15}}\] photons per secondYou need to login to perform this action.
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