Calculate wavelength of a photon having energy 1.2 ev. (1 ev = 1.601 xx `10^(-19)` Joule)

Calculate the wave length of photon having energy 2'ev.

Calculate the wavelength of a photon (in nm) having enerrgy of 1eV.

Find the wavelength of an electron having kinetic energy 10 eV. (h = 6.33 xx 10^(-34) J.s, m_(e) = 9 xx 10^(-31) kg)

Calculate the de Broglie wavelength of an electron of kinetic energy 500 eV.

Maximum kinetic energy of the released photoelectrons emitted from metallic sodium, when a light is incident on it, 0.73 eV. If the work function of sodium is 1.82eV, find the energy of the incident photon in eV. Find wavelength of incident light. ( h = 6.63 xx 10^(-27) erg. s, 1eV = 1.6 xx 10^(-12) erg)

Calculate the wavelength of an electron in a 10 MeV particle accelerator (1 MeV = 10^6eV) .

The de Broglie wavelength of an electron (mass =1 xx 10^(-30)kg , charge =1.6 xx 10^(-19)C ) with a kinetic energy of 200eV is (Planck's constant =6.6 xx 10^(-34)Js )

A stream of photons of energy 10.6 eV and intensity 2.0 W m^(-2) is incident on a platinum surface. Area of the surface is 1.0 xx 10^(-4) m^(2) and its work function is 5.6 eV. 0.53 % of incident photons emit photoelectrons. Find the number of photoelectrons emitted per second and maximum and minimum energies of the emitted photoelectrons in eV. (1eV = 1.6 xx 10^(-19)J)

Calculate the energy of 1 Millimole of photon having wavelength 405nm