Question

The de-Broglie wavelength associated with a ball of mass 1kg having kinetic energy 0.5 J is

• A.
• B.
• C.
• D.

Answer 1

The correct option is A

$\lambda =\frac{h}{\sqrt{2m\times KE}}=\frac{6.626\times {10}^{-34}}{\sqrt{2\times 1\times 0.5}}=6.626\times {10}^{-34}m$