An electron from various excited states of hydrogen atom emit radiation to come to the ground state. Let λn, λg be the de Broglie wavelength of the electron in the nth state and the ground state respectively. Let n be the wavelength of the emitted photon in the transition from the n state to the ground state. For large n, (A, B are constants)
so using Binomial expansion
Velocity of electron in nth orbital -
- wherein
Option 1)
This is incorrect
Option 2)
This is correct
Option 3)
This is incorrect
Option 4)
This is incorrect
Study 40% syllabus and score up to 100% marks in JEE