21 JEE Main 2023 Atomic Physics previous-year questions with verified answers and step-by-step solutions.
These are the JEE Main 2023 previous-year questions from the Atomic Physics chapter of Physics. Each links to a full solution with a verified answer key. To see the whole chapter across all years, visit the Atomic Physics chapter hub.
A 12 . 5   eV electron beam is used to bombard gaseous hydrogen at room temperature. The number of spectral lines…
The ratio of wavelength of spectral lines H α and H β in the Balmer series is x 20 . The value of x is _____.
An electron of a hydrogen like atom, having Z   =   4 , jumps from 4 t h energy state to 2 n d energy state,…
The mass of proton, neutron and helium nucleus are respectively 1 . 0073   u ,   1 . 0087   u   and…
A photon is emitted in transition from n = 4   to   n = 1 level in hydrogen atom. The corresponding wavelengt…
The energy levels of an hydrogen atom are shown below. The transition corresponding to emission of shortest wavelength…
An atom absorbs a photon of wavelength 500   nm and emits another photon of wavelength 600   nm . The net ene…
The angular momentum for the electron in Bohr’s orbit is L . If the electron is assumed to revolve in second orbi…
Nucleus a having Z = 17 and equal number of protons and neutrons has 1 . 2   MeV binding energy per nucleon. Anoth…
A monochromatic light is incident on a hydrogen sample in ground state. Hydrogen atoms absorb a fraction of light and s…
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