A) \[1.72\times {{10}^{31}}\]
B) \[1327\times {{10}^{34}}\]
C) \[13.27\times {{10}^{34}}\]
D) \[0.075\times {{10}^{-34}}\]
Correct Answer: A
Solution :
Number of photons emitted per second \[n=\frac{p}{h\nu }=\frac{10\times {{10}^{3}}}{6.6\times {{10}^{-34}}\times 880\times {{10}^{3}}}=1.72\times {{10}^{31}}\]
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