Question

The wavelength of light ($\lambda$) and its momentum ($p$) are related as:
where $h$ is Planck's constant

• A. $\lambda =\frac{p}{h}$
• B. $\lambda =ph$
• C. $\lambda =\frac{h}{p}$
• D. $\lambda =\frac{h^2}{p}$

Answer 1

The correct option is C $\lambda =\frac{h}{p}$

$\lambda =\frac{h}{p}$

The relationship between momentum and wavelength for matter wave is given by $p=\frac{h}{\lambda }$ . The wavelength $\lambda$ is called de-Brogile wavelength.