A) \[57\overset{0}{\mathop{A}}\,\]
B) \[57\times {{10}^{-3}}\overset{0}{\mathop{A}}\,\]
C) \[217105\overset{0}{\mathop{A}}\,\]
D) \[11.61\times {{10}^{-33}}\overset{0}{\mathop{A}}\,\]
Correct Answer: C
Solution :
\[E=57\,\,meV=57\times {{10}^{-3}}eV\] \[\therefore \] \[\lambda =\frac{12375}{E}=\frac{12375}{57\times {{10}^{-3}}}\] \[=217.105\times {{10}^{3}}\overset{\text{o}}{\mathop{\text{A}}}\,\] \[\lambda =217105\,\,\overset{\text{o}}{\mathop{\text{A}}}\,\]
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