A) 30 KV
B) 50 KV
C) 80 KV
D) 60 KV
Correct Answer: A
Solution :
Form the formula \[eV=\frac{hc}{\lambda }\] or \[V=\frac{hc}{e\lambda }\] Here \[\lambda =0.4125\overset{\text{o}}{\mathop{\text{A}}}\,\] \[V=\frac{6.6\times {{10}^{-34}}\times 3\times {{10}^{8}}}{1.6\times {{10}^{-19}}\times 0.4125\times {{10}^{-10}}}\] \[\Rightarrow \] \[V=30\times {{10}^{3}}\] volt \[=30KV\]You need to login to perform this action.
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