A) 3
B) 4
C) 5
D) 2
Correct Answer: A
Solution :
| \[{{V}_{0}}=\frac{E-V}{e}\] |
| \[=\frac{h(v-{{v}_{0}})}{e}\] |
| \[=\frac{6.62\times {{10}^{-34}}(8.2\times {{10}^{14}})(8.2\times {{10}^{14}})-3.3\times {{10}^{14}})}{1.6\times {{10}^{-19}}}\] \[=\frac{6.62\times {{10}^{-34}}}{1.6}\times 4.9\times {{10}^{33}}\] |
| \[=\frac{6.62\times 4.9\times {{10}^{-1}}}{1.6}\] |
| \[{{V}_{0}}=2\,volt\] |
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