A) \[2.1\times {{10}^{-34}}\]
B) \[0.5\times {{10}^{-34}}\]
C) \[2.1\times {{10}^{-28}}\]
D) \[0.5\times {{10}^{-23}}\]
Correct Answer: C
Solution :
[c] \[\Delta x.\Delta p=\frac{hv}{4\pi };\Delta x.m.\Delta v=\frac{h}{4\pi }\] \[\Delta v=\frac{h}{4\pi m.\Delta x}=\frac{6.626\times {{10}^{-34}}}{4\times 3.14\times 25\times {{10}^{-3}}\times {{10}^{-5}}}\] \[=2.1\times {{10}^{-28}}m/s\]
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