Practicing Success
The wavelength of light from the spectral emission line of sodium is 662 nm. The kinetic energy at which an electron would have same de-Broglie wavelength would be: $(h=6.62× 10^{-34} J-s, m_e=9×10^{-31} kg)$ |
$5.5 × 10^{-25} J$ $5.5 × 10^{-24} J$ $18 × 10^{-23} J$ $4.5 × 10^{-22} J$ |
$5.5 × 10^{-25} J$ |
The correct answer is Option (1) → $5.5 × 10^{-25} J$ |