logo

Ask Questions, Get Answers

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

Calculate the wavelength (in nanometer) associated with a proton moving $1.0\times 10^3ms^{-1}$ (mass of proton=$1.67\times 10^{-27}$kg and $h=6.63\times 10^{-34}Js)$

$(a)\;0.032nm\qquad(b)\;0.40nm\qquad(c)\;2.5nm\qquad(d)\;14.0nm$

Can you answer this question?
 
 

1 Answer

0 votes
$\lambda=\large\frac{h}{mu}=\large\frac{6.63\times 106{-34}}{1.67\times 10^{-27}\times 1.0\times 10^3}$
$\Rightarrow 0.397\times 10^{-9}m$
$\Rightarrow \approx 0.40\times nm$
Hence (b) is the correct answer.
answered Jan 13, 2014 by sreemathi.v
 

Related questions

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