Jee Main
Dual Nature Of Radiation
JEE Main 2024 (Online) 6th April Evening Shift
INTEGER+4 / -12024
In Franck-Hertz experiment, the first dip in the current-voltage graph for hydrogen is observed at \(10.2 \mathrm{~V}\). The wavelength of light emitted by hydrogen atom when excited to the first excitation level is ________ nm. (Given hc \(=1245 \mathrm{~eV} \mathrm{~nm}, \mathrm{e}=1.6 \times 10^{-19} \mathrm{C}\)).
