Question

The de-Broglie wavelength associated with a particle of mass 1 kg moving with a velocity of $10m$ $s^{-1}$ is:

• A. $6.63\times {10}^{-35}m$
• B. $6.63\times {10}^{-34}m$
• C. $6.65\times {10}^{-33}m$
• D. $6.63\times {10}^{-32}m$

Answer 1

The correct option is A $6.63\times {10}^{-35}m$

Given:

$m=1Kg,v=10m/s$

Formula:

$\lambda =h/mv$

$\lambda =\frac{6.626\times {10}^{-34}}{1Kg\times 10m/s}J-s$
$=6.63\times {10}^{-35}m$