A) \[5.47\,\overset{\text{o}}{\mathop{\text{A}}}\,\]
B) \[10.9\,\overset{\text{o}}{\mathop{\text{A}}}\,\]
C) \[2.7\,\overset{\text{o}}{\mathop{\text{A}}}\,\]
D) None of these
Correct Answer: A
Solution :
Wavelength associated with an electron \[\lambda =\frac{h}{\sqrt{2mE}}\] \[=\frac{6.6\times {{10}^{-34}}}{\sqrt{2\times 9.1\times {{10}^{-31}}\times 5\times 1.6\times {{10}^{-19}}}}\] \[=5.47\times {{10}^{-10}}m=5.47\,\overset{\text{o}}{\mathop{\text{A}}}\,\]
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