List of top Physics Questions on Atoms and Nuclei asked in BITSAT

Hydrogen (H), deuterium (D), singly ionized helium (He⁺) and doubly ionized lithium (Li⁺+) all have one electron around the nucleus. Consider n = 2 to n = 1 transition. The wavelengths of emitted radiations are lambda₁, lambda₂, lambda₃ and lambda₄ respectively. Then approximately
A neutron moving with speed v makes a head-on collision with a hydrogen atom in ground state kept at rest. The minimum kinetic energy of the neutron for which inelastic collision takes place is
In an electron gun, the potential difference between the filament and plate is 3000V. What will be the velocity of electron emitting from the gun?
The third line of Balmer series of an ion equivalent to hydrogen atom has wavelength 108.5 nm. The ground state energy of an electron of this ion will be:
Hydrogen (H), deuterium (D), singly ionized helium (He⁺) and doubly ionized lithium (Li²+) all have one electron around the nucleus. Consider n=2 to n=1 transition. The wavelengths of emitted radiations are lambda₁, lambda₂, lambda₃ and lambda₄ respectively. Then approximately
A neutron moving with speed \(v\) makes a head-on collision with a hydrogen atom in the ground state kept at rest. The minimum kinetic energy of the neutron for which inelastic collision takes place is:
An electron in a hydrogen-like atom is in an excited state. It has total energy of -3.4 eV. The kinetic energy and de-Broglie wavelength respectively are:
The energies of energy levels A, B and C are EA < EB < EC. If the radiations of wavelengths ₁, ₂, ₃ are emitted due to transitions C to B, B to A and C to A respectively, then which relation is correct?