For a photon

PHYSICS · Single correct · CBSE · Physics · Dual Nature of Radiation and Matter · Dual Nature of Radiation and Matter

Problem

For a photon, the relations

E=hf

and

p=E/c

hold. Eliminating

E

leads to a direct relation between momentum

p

and wavelength

\lambda

. Which of the following correctly gives this relation? (a)

p = \dfrac{h}{2\pi \lambda}

(b)

p = \dfrac{2 h}{\lambda}

(c)

p = \dfrac{h}{\lambda}

(d)

p = \dfrac{2\pi h}{\lambda}