An object of mass $200 \ g$ is moving with a speed of $5 \ m/hr$. The order of the de Broglie wavelength associated with it is ...... $(h = 6.626 \times 10^{-34} \ J \cdot s)$.
- A$10^{-10} \ m$
- B$10^{-20} \ m$
- C$10^{-30} \ m$
- D$10^{-40} \ m$
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