The voltage across the electrodes of a cathode ray gun is 500 V. calculate
(i) the energy gained by the electrons,
(ii) the speed of the electrons, and
(iii) the momentum of the electrons.

The voltage across the electrodes of a cathode ray tube is 1000 V . Calculate the speed of the electron. Given mass of an electron =.1xx10^(-31)kg and charge on electron =1.6xx10^(16)C .

A photon of wavelenth 3000 A strikes a metal surface, the work function of the metal being 2.20eV . Calculate (i) the energy of the photon in eV(ii) the kinetic energy of the emitted photo electron and (iii) the velocity of the photo electron.

Cathode ray tube is operating at 5KV. . Then the K.E. acquire by the electrons is

The ground state energy of the hydrogen atom is 13.6 eV. Calculate (i)the kinetic energy of the electron in the 1^(st) excited state. (ii)the potential energy of the electron in the 3^(rd) excited state. (iii)frequency of the photon emitted if the electron jumps from the 3^(rd) excited state of 1^(st) excited state.

In an electron gun, the electrons are accelerated by the potential V . If the e is the charge and m is the mass of the electron, then the maximum velocity of these electrons will be

An electron and a photon each have a wavelength 1.00 nm. Find (i) their momenta, (ii) the energy of the photon and (iii) the kinetic energy of electron.

An electron and a photon each have a wavelength of 1.50 nm. Find (i) their momenta, (ii) the energy of the photon and (iii) kinetic energy of the electron.