A) \[2\lambda \]
B) \[4\lambda \]
C) \[\frac{\lambda }{2}\]
D) \[\frac{\lambda }{4}\]
Correct Answer: C
Solution :
From the relation, \[\lambda =\frac{h}{\sqrt{2mweV}}\] ... (i) So, when V becomes 4V, then \[\lambda =\frac{h}{\sqrt{2me\,(4V)}}\] \[\Rightarrow \] \[\lambda =\frac{h}{2\sqrt{2meV}}\] \[\Rightarrow \] \[\lambda =\frac{\lambda }{2}\]You need to login to perform this action.
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