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# Find the wavelength of 100 g particle moving with velocity $100 ms^{-1}$

$\begin{array}{1 1} (a)\;6.626 \times 10^{-35}\;m\\ (b)\;7.626 \times 10^{-35}\;m \\ (c)\;5.626 \times 10^{-35}\;m \\ (d)\;8.626 \times 10^{-35}\;m\end{array}$

$\lambda = \large\frac{h}{mv}$
$\qquad= \large\frac{6.626 \times 10^{-34} \;kg\;m^2s^{-1}}{0.1 \times 100\;ms^{-1}}$
$\qquad=6.626 \times 10^{-35}\;m$