Question

de-Broglie wavelength of a body of mass 1 kg moving with velocity of 2000 m/s is

• A. $3.32\times {10}^{-27}\dot{A}$
• B. $1.5\times {10}^7\dot{A}$
• C. $0.55\times {10}^{-22}\dot{A}$
• D. None of these

Answer 1

The correct option is A

$3.32\times {10}^{-27}\dot{A}$

$\lambda =\frac{h}{mv}=\frac{6.6\times {10}^{-34}}{1\times 2000}=3.3\times {10}^{-37}m=3.3\times {10}^{-27}\dot{A}$