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  3. Chemistry
  4. The de Broglie wavelength associated with a ball of mass 200 g and moving at a speed of 5 metres/hour, is of the order of (h = 6.625 × 10-34 J s) is

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Q. The de Broglie wavelength associated with a ball of mass $200\,g$ and moving at a speed of $5$ metres/hour, is of the order of ($h = 6.625 \times 10^{-34}\,J\, s$) is

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Solution:

According to de Broglie’s equation
$\lambda=\frac{h}{mv}$
$=\frac{6.626 \times 10^{-34} \times 3600}{0.2 \times 5}$
$\lambda=2.385\times10^{-30}\,m$