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)

inversely proportional to its momentum

Answer 2

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