Ask Questions, Get Answers

Want to ask us a question? Click here
Browse Questions
0 votes

Calculate the uncertainty in velocity of a cricket ball (mass=0.15Kg) if its uncertainty position is of the order of $1A^{\large\circ}$

$\begin{array}{1 1}(a)\;3.51\times 10^{-24}m/s&(b)\;2.6\times 10^{-24}m/s\\(c)\;3.51\times 10^{-20}m/s&(d)\;1.6\times 10^{-24}m/s\end{array}$

Can you answer this question?

1 Answer

0 votes
$\Delta u\Delta x=\large\frac{h}{4\pi m}$
$\Delta u=\large\frac{h}{4\pi m \Delta x}$
$\Rightarrow \large\frac{6.625\times 10^{-34}}{4\times 22/7\times 0.15\times 10^{-10}}$
$\Rightarrow3.51\times 10^{-20}m/s$
Hence (c) is the correct answer.
answered Jan 16, 2014 by sreemathi.v

Related questions

Ask Question
student study plans
JEE MAIN, CBSE, AIPMT Mobile and Tablet App
The ultimate mobile app to help you crack your examinations
Get the Android App