JEE Main & Advanced
Physics
Photo Electric Effect, X- Rays & Matter Waves
JEE PYQ-Photo Electric Effect X-rays
question_answer
In a Frank-Hertz experiment, an electron of energy 5.6 eV passes through mercury vapour and emerges with an energy 0.7 eV. The minimum wavelength of photons emitted by mercury atoms is close to- [JEE Main 12-Jan-2019 Evening]