8 JEE Main 2012 Atomic Physics previous-year questions with verified answers and step-by-step solutions.
These are the JEE Main 2012 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.
Which of the plots shown in the figure represents speed (v) of the electron in a hydrogen atom as a function of the pri…
A diatomic molecule is made of two masses m₁ and m₂ which are separated by a distance r. If we calculate its rotational…
Ionisation energy of Li (Lithium) atom in ground state is 5.4 eV. Binding energy of an electron in Li⁺ion in ground sta…
Hydrogen atom is excited from ground state to another state with principal quantum number equal to 4. Then the number o…
A hypothetical atom has only three energy levels. The ground level has energy, E₁=-8 eV. The two excited states have en…
The electron of a hydrogen atom makes a transition from the (n+1)th orbit to the nth orbit. For large n the wavelength…
In the Rutherford experiment, α-particles are scattered from a nucleus as shown. Out of the four paths, which path is n…
A doubly ionised Li atom is excited from its ground state(n=1) to n=3 state. The wavelengths of the spectral lines are…