Question

The de-Broglie wavelength of a particle is

• A. proportional to its mass
• B. proportional to its velocity
• C. inversely proportional to its momentum
• D. proportional to its total energy

Answer 1

Answer: (C)

The de-Broglie wavelength of a particle is inversely proportional to its momentum
$\lambda =\frac{h}{mv}$ (de - Broglie equation)
$\therefore \lambda =\frac{h}{P}$ ($P=$ momentum)