A) \[2.1\times {{10}^{-28}}\]
B) \[2.1\times {{10}^{-34}}\]
C) \[0.5\times {{10}^{-34}}\]
D) \[5.0\times {{10}^{-24}}\]
Correct Answer: A
Solution :
Heisenberg uncertainty principle \[\Delta x.\,m\Delta v\approx \frac{h}{4\pi }\] Uncertainty in velocity \[\Delta v=\frac{h}{4\times 3.14\times \Delta x\times m}\] \[=\frac{6.626\times {{10}^{-34}}}{4\times 3.14\times 0.025\times {{10}^{-5}}}=2.1\times {{10}^{-28}}\]
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