Question

A cricket ball of $0.5\, kg$ is moving with a velocity of $100 \,m/sec$. The wavelength associated with its motion is:

• A. $1/100\, cm$
• B. $ 6.6\times {{10}^{-34}}m $
• C. $ 1.32\times {{10}^{-35}}m $
• D. $ 6.6\times {{10}^{-28}}m $

Answer 1

Answer: (C)

From de Broglie equation:
$ \lambda =\frac{h}{m\upsilon } $
$=\frac{6.62 \times 10^{-34}}{0.5 \times 100}$
$=1.32 \times 10^{-35} m$