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Dual Nature of Radiation question

2024 · 6 Apr · Shift 2 · Q88
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Dual Nature of Radiation question

2024 · 6 Apr · Shift 2 · Q88

JEE MainPhysicsDual Nature of RadiationNumerical+4 / −1
In Franck-Hertz experiment, the first dip in the current-voltage graph for hydrogen is observed at 10.2 V10.2 \mathrm{~V}10.2 V. The wavelength of light emitted by hydrogen atom when excited to the first excitation level is ‾\underline{\hspace{2cm}}​ nm. (Given hc =1245 eV nm,e=1.6×10−19C=1245 \mathrm{~eV} \mathrm{~nm}, \mathrm{e}=1.6 \times 10^{-19} \mathrm{C}=1245 eV nm,e=1.6×10−19C).
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