Question

A ball of mass $100g$ is moving with a velocity of $100m{sec}^{-1}$. Find its wavelength.

Answer 1

Using De-broglie's equation, given $m=100g,v=100m/s$

$\lambda =\frac{h}{mv}=\frac{6.626\times {10}^{-34}}{0.1\times 100}=6.626\times {10}^{-35}m$