A `12.5eV` electron beam is used to bombard gaseous hydrogen at room temperature. What series of wavelengths will be emitted?

The total energy of an electron in the first excited state of the hydrogen atom is about -3.4eV . What is the potential energy of the electron in this state?

The total energy of an electron in the first excited state of the hydrogen atom is about -3.4eV . What is the kinetic energy of the electron in this state?

The energy of the electron in the ground state of hydrogen atom is -13.6 eV . Find the Rydberg's constant and the wavelength of the first line of Paschen series

What is the energy in joules, required to shift the electron of the hydrogen atom from the first Bohr orbit to the fifth Bohr orbit and what is the wavelength of the light emitted when the electron returns to the ground state? The ground state electron energy is -2.18 xx 10^-11 ergs.

The radius of innermost electron orbit of a hydrogen atom is 5.3xx10^(-11)m . What is the radius of orbit in the second excited state?

The electron in hydrogen atom is given by E_n = (-2.18 xx 10^-18)//n^2 J . Calculate the energy required to remove an electron completely from the n = 2 orbit. What is the longest wavelength of light in cm that can be used to cause this transition?

the no. densities of electrons and holes in a pure germanium at room temperature are equal and its value is 2×10^(16) per m^3 . On doping with aluminium the hole density increases to 3.5×10^(22) per m^3 then the electron density in dppoed germanium is

In biprism experiment the distance between 4th and 13th bright fringes on same side is measured when light of wavelength 6000 overset (@)(A) is used.On replacing the source of light by another of different wavelength without disturbing the adjustment of the apparatus, it is found that the distance between the 5th and 15th bright fringe on same side is the same as distance measured before. What is the wavelength of light used?

A 150 eV electron has a wavelength of 1.0 overset (@)(A) . What is the wavelength of a 0.6 ke V electron ?

The ground state energy of hydrogen atom is -X eV . What will be the kinetic energy of the electron in this state?