1. Tardigrade
  2. Question
  3. Physics
  4. The wavelength of light in the visible region is about 390 nm for violet colour and about 760 nm for red colour. The energy of photon in eV at violet end is, the energy of photon in eV at the red end of the visible spectrum is

Question Error Report

Thank you for reporting, we will resolve it shortly

Back to Question

Q. The wavelength of light in the visible region is about $390 \,nm$ for violet colour and about $760\, nm$ for red colour. The energy of photon in $eV$ at violet end is, the energy of photon in $eV $ at the red end of the visible spectrum is

Dual Nature of Radiation and Matter

Solution:

For red light, $\lambda=760\,nm$
$E=\frac{6.63\times10^{-34}\times3\times10^{8}}{760\times10^{-9}}J$
$=2.62\times10^{-19}J =\frac{2.62\times10^{-19}}{1.6\times10^{-19}}eV$
$=1.64\,eV$