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

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

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?

If the electron in a hydrogen atom jumps from an orbit with level n₂ = 3 to an orbit with level n₁ = 2, the emitted radiation has a wavelength given by 

Which source is associated with a line emission spectrum?

When hydrogen atom is in its first excited level, its radius is

The Bohr model of atoms

When electron jumps from n = 4 to n = 2 orbit, we get

The ionization energy  of hydrogen atom is 13.6 eV.  Following Bohr’s theory, the energy corresponding to a transition between 3^rd and 4^th orbit is

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