$A$ body of mass $10 \ mg$ is moving with a velocity of $100 \ ms^{-1}$. The wavelength of de-Broglie wave associated with it would be $(h=6.63 \times 10^{-34} \ Js)$.
- A$6.63 \times 10^{-35} \ m$
- B$6.63 \times 10^{-34} \ m$
- C$6.63 \times 10^{-31} \ m$
- D$6.63 \times 10^{-37} \ m$
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