A) \[6.626\times {{10}^{-34}}m\]
B) \[6.626\times {{10}^{-38}}m\]
C) \[6.626\times {{10}^{-31}}m\]
D) \[6.626\times {{10}^{-30}}m\]
Correct Answer: B
Solution :
[b] \[\lambda =\frac{h}{mv}\] \[h=6.6\times {{10}^{-34}}\,J-s\] \[m=1000\,kg\] \[v=36\,km/hr=\frac{36\times {{10}^{3}}}{60\times 60}\,m/\sec =10m/\sec \] \[\therefore \,\,\,\lambda =\frac{6.6\times {{10}^{-34}}}{{{10}^{3}}\times 10}=6.6\times {{10}^{-38}}\,m\]
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