Question

The de-Broglie wavelength associated with a particles of mass ${10}^{-6}kg$ moving with a velocity of $10m{s}^{-1}$ is :

• A. $6.63\times {10}^{-22}m$
• B. $6.63\times {10}^{-29}m$
• C. $6.63\times {10}^{-31}m$
• D. $6.63\times {10}^{-34}m$

Answer 1

Answer: (B)

$6.63\times {10}^{-29}m$

$\lambda =\frac{h}{mc}=\frac{6.63\times {10}^{-34}}{{10}^{-6}\times 10}=6.63\times {10}^{-29}m$