Atoms questions
233 published questions with worked solutions.
- Which one of the following statements is WRONG in the context of X-rays generated from a X-ray tube?
- If an alpha particle with energy 7.7 MeV is bombarded on a thin gold foil, the closest distance from nucleus it can reach is...
- 7.9 MeV -particle scatters from a target material of atomic number 79. From the given data the estimated diameter of nuclei of...
- During the transition of electron from state A to state C of a Bohr atom, the wavelength of emitted radiation is 2000 Å and it...
- Hydrogen ( _1 H ^1), Deuterium ( _1 H ^2), singly ionised Helium ( _2 He ^4)^+ and doubly ionised lithium ( _3 Li ^6)^ ++ all...
- An electron from various excited states of hydrogen atom emit radiation to come to the ground state. Let _n, _g be the de Broglie...
- Both the nucleus and the atom of some element are in their respective first excited states. They get de-excited by emitting...
- Taking the wavelength of first Balmer line in hydrogen spectrum (n = 3 to n = 2) as 660 nm, the wavelength of the 2nd Balmer line...
- Muon ( ^ -1 ) is negatively charged (|q| = |e|) with a mass m_ = 200 ,m_e, where m_e is the mass of the electron and e is the...
- In a Frank-Hertz experiment, an electron of energy 5.6 eV passes through mercury vapour and emerges with an energy 0.7 eV. The...
- In a hydrogen like atom, when an electron jumps from the M-shell to the L-shell, the wavelength of emitted radiation is λ. If an...
- The electron in a hydrogen atom first jumps from the third excited state to the second excited state and subsequently to the...
- The energy required to ionize a hydrogen like ion in its ground state is 9 Rydbergs. What is the wavelength of the radiation...
- A particular hydrogen-like ion emits the radiation of frequency 3 10^ 15 Hz when it makes transition from n = 2 to n = 1. The...
- The angular momentum of an electron in a hydrogen atom is proportional to: (Where r is the radius of orbit of electron)
- In a hydrogen atom the electron makes a transition from (n + 1)th level to the nth level. If n>>l, the frequency of radiation...
- In Franck-Hertz experiment, the first dip in the current-voltage graph for hydrogen is observed at 10.2 V. The wavelength of...
- In an alpha particle scattering experiment distance of closest approach for the α particle is 4.5 × 10⁻¹⁴ m. If target nucleus...
- Using Bohr's model, calculate the ratio of the magnetic fields generated due to the motion of the electrons in the 2ⁿᵈ and 4ᵗʰ...
- In the hydrogen atom, the electron makes a transition from the higher orbit (i) to a lower orbit (f). The ratio of the radius of...
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