Question

The wavelength associated with a golf ball weighing 200g and moving at speed of 5m/h is of the order:

• A. ${10}^{-10}m$
• B. ${10}^{-20}m$
• C. ${10}^{-30}m$
• D. ${10}^{-40}m$

Answer 1

Answer: (C)

${10}^{-30}m$

$momentum=\frac{200}{1000}\times \frac{5m/s}{3600}$
$\lambda =\frac{6.6\times {10}^{-34}J-s}{\frac{1}{5}\times \frac{5}{3600}m/s}$
$=2.3760\times {10}^{-30}m$