A) \[1.2\times {{10}^{34}}\]
B) \[2.1\times {{10}^{-29}}\]
C) \[1.6\times {{10}^{-20}}\]
D) \[1.7\times {{10}^{-9}}\]
Correct Answer: B
Solution :
According to \[\Delta x\ \times m\ \times \Delta v=\frac{h}{4\pi }\]; \[\Delta v=\frac{h}{\Delta x\ \times m\ \times 4\pi }\] \[=\frac{6.6\times {{10}^{-34}}}{{{10}^{-5}}\times 0.25\times 3.14\times 4}=2.1\times {{10}^{-29}}\ \ m/s\]
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