Question

What is the momentum of a photon if the wavelength of X-rays is 1 angstrom?

Answer 1

Given that,

Wave length$\lambda =1\stackrel{\circ }{A}$

We know that,

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

$p=\frac{6.26\times {10}^{-34}}{{10}^{-10}}$

$p=6.26\times {10}^{-24}kgm/s$

Hence, this is the required solution