A) 700 m/s
B) 1000 m/s
C) 1400 m/s
D) 2000 m/s
Correct Answer: C
Solution :
Momentum \[P=mv=\frac{h}{\lambda }\] \[v=\frac{h}{m\lambda }\] \[v=\frac{6.62\times {{10}^{-34}}}{9.1\times {{10}^{-31}}\times 5.2\times {{10}^{-7}}}\] \[v=\frac{6.62\times {{10}^{4}}}{9.1\times 5.2}\] \[v=1.4\times {{10}^{3}}m\text{/}s\] \[v=1400\,m\text{/}s\]
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