A) \[\text{600}\overset{\text{o}}{\mathop{\text{A}}}\,\]
B) \[0.9\times {{10}^{-12}}m\]
C) \[7{{A}^{o}}\]
D) \[0.9\text{ }nm\]
Correct Answer: B
Solution :
According to de-Broglie hypothesis \[\lambda =\frac{h}{p}\] \[=\sqrt{\frac{h}{2mE}}=\frac{h}{\sqrt{2mqV}}\] \[\therefore \]\[\lambda =\frac{6.6\times {{10}^{-34}}}{\sqrt{2\times (1.6\times {{10}^{-27}})(1.6\times {{10}^{-19}})\times 1000}}\] \[=\frac{6.6\times {{10}^{-34}}}{7.16\times {{10}^{-22}}}\] \[=0.9\times {{10}^{-12}}m\]
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