A) \[6\times {{10}^{11}}\]
B) \[9\times {{10}^{11}}\]
C) \[11\times {{10}^{11}}\]
D) \[15\times {{10}^{11}}\]
Correct Answer: B
Solution :
[b] Given, and |
and |
Intensity associated with each wavelength |
work function |
for different wavelengths |
Work function for metallic surface (given) |
Therefore, will not contribute in this process. |
Now, no. of electrons per no. of photons per |
no. of electrons per |
So, the number of photo electrons liberated in 2 sec. |
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