MEDIUM
12th West Bengal Board
IMPORTANT
Earn 100
Name the series of hydrogen spectrum which has lowest wavelength ?
Important Questions on Bohr Model, X-Ray Spectra, Wave-Particle Duality
HARD
12th West Bengal Board
IMPORTANT
The wavelengths of some of the spectral lines obtained in hydrogen spectrum are , and . Which one of these wavelengths belongs to the Paschen series?
EASY
12th West Bengal Board
IMPORTANT
What do you mean by ground state of an atom?
MEDIUM
12th West Bengal Board
IMPORTANT
What is the ratio of radii of the orbits corresponding to first excited state and ground state in a hydrogen atom?
HARD
12th West Bengal Board
IMPORTANT
An electron revolves in a circular orbit around a nucleus of charge Ze. How is the electron velocity related to the radius of the orbit?
HARD
12th West Bengal Board
IMPORTANT
Write two limitations of Bohr's atomic model.
HARD
12th West Bengal Board
IMPORTANT
Find the energies of photons produced due to the transition of an electron of the hydrogen atom from its
second permitted energy level to the first level and
HARD
12th West Bengal Board
IMPORTANT
Find the energy of photons produced due to the transition of an electron of a hydrogen atom from its
the highest permitted energy level to the first permitted level.
EASY
12th West Bengal Board
IMPORTANT
The ground state energy of hydrogen atom is -13.6 eV. What are the kinetic and potential energies of electron in this state? [1 Mark]
