Question

The de-Broglie wavelength associated with a material particle is :

• A. directly proportional to its energy
• B. directly proportional to momentum
• C. inversely proportional to its energy
• D. inversely proportional to momentum

Answer 1

The correct option is D inversely proportional to momentum

The de Broglie wavelength is the wavelength $\lambda$, associated with a massive particle and is inversely proportional to its momentum, $p$.

$\therefore \lambda \alpha \frac{1}{p}$

i.e $\lambda =\frac{h}{p}$ where,

$h=$ planck's cnstant