A) \[1.4\,\times {{10}^{19}}\]
B) \[3\times {{10}^{3}}\]
C) \[1.4\times {{10}^{-19}}\]
D) \[3\times {{10}^{4}}\]
Correct Answer: A
Solution :
Energy radiated as visible light \[\mu F\] Let n be the number of photons emitted per second. Then, nhv = E = 5 \[\frac{8}{3}V\] \[l\] \[=1.4\,\times {{10}^{19}}\]
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