JEE Main & Advanced
Physics
Photo Electric Effect, X- Rays & Matter Waves
JEE PYQ-Photo Electric Effect X-rays
question_answer
The electron in a hydrogen atom first jumps from the third excited state to the second excited state and subsequently to the first excited state. The ratio of the respective wavelengths, of the photons emitted in this process is : [JEE Main 12-4-2019 Afternoon]