In a Rutherford scattering experiment when a projectile of charge Z₁and mass M₁ approaches a target nucleus of charge Z₂ and Mass M₂, the distance of closest approach is r₀. The energy of the projectile is

In the Bohr model of the hydrogen atom, let R, V and E represent the radius of the orbit, the speed of electron and the total energy of the electron respectively.Which of the following quantity is proportional to the quantum number n?

The ionization energy of the electron in the hydrogen atom in its ground state is 13.6 eV. The atoms are excited to higher energy levels to wavelength of emitted radiation corresponds to the transition between

The spectrum obtained from a sodium vapour lamp is an example of

The Bohr model of atoms

In the Bohr’s model of a hydrogen atom, the centripetal force is furnished by the Coulomb attraction between the proton and the electron. If a₀ is the radius of the ground state orbit, m is the mass and e is the charge on the electron, ε₀ is the vacuum permittivity, the speed of the electron is

If 13.6 eV energy is  required to ionize the hydrogen atom, then the energy required to remove an electron from n = 2 is

Hydrogen atom emits blue light when it changes from n = 4 energy level to n = 2 level. Which colour of light would the atom emit when it changes from n = 5 level to n = 2 level?

The total energy of electron in the ground state of hydrogen atom is -13.6 eV. The kinetic energy of an electron in the first excited state is

Which source is associated with a line emission spectrum?