Question

What value of Planck's constant is used in the de Broglie wavelength calculations?

Options

• \[9.11\times10^{-31}\ \mathrm{kg}\]

• \[6.63\times10^{-34}\ \mathrm{J\,s}\]

• \[1.47\times10^{-34}\ \mathrm{m}\]

• \[5.4\times10^{6}\ \mathrm{m/s}\]

Answer 1

The calculations use \[h=6.63\times10^{-34}\ \mathrm{J\,s}\]. The other values describe the electron or a calculated de Broglie wavelength.