A) \[8\times {{10}^{7}}\]
B) \[5\times {{10}^{-11}}\]
C) \[8\times {{10}^{-11}}\]
D) \[5\times {{10}^{7}}\]
Correct Answer: D
Solution :
| [d] Energy \[=2\,eV\] |
| \[e{{V}_{0}}=2\,eV\] |
| \[\Rightarrow \] \[{{V}_{0}}=2\] |
| Now, electric field \[E=\frac{2}{4\times {{10}^{-8}}}\] |
| \[=0.5\times {{10}^{8}}\] |
| \[=5\times {{10}^{7}}\,V{{m}^{-1}}\] |
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