Find the kinetic energy if hv = 2.1 eV and work function is given as `5 xx 10^(-19) J`

An electron beam energes from an accelerator with kinetic energy 100eV. What is its de-Broglie wavelength? [m = 9.1 xx 10^(-31)kg, h = 6.6 xx 10^(-34)Js, 1eV = 1.6 xx 10^(-19)J]

Find the maximum velocity of photoelectrons emitted by radiation of frequency 3 xx 10^(15) Hz from a photoelectric surface having a work function of 4.0 eV. Given h=6.6 xx 10^(-34) Js and 1 eV = 1.6 xx 10^(-19) J.

Find the maximum velocity of photoelectrons emitted by radiation of frequency 3 xx 10^(15) Hz from a photoelectric surface having a work function of 4.0 eV. Given h=6.6 xx 10^(-34) Js and 1 eV = 1.6 xx 10^(-19) J.

In photoelectric effect, the energy of the photon striking a metallic surface is 5.6 xx 10^(-19)J . The kinetic energy of the ejected electrons is 12.0 xx 10^(-20)J . The work function is:

A metal having work function 4.41xx10^(-19) J is sunjected to a light having wavelength 300nm, then maximum kinetic energy of the emitted photoelectron is ...........xx10^(-21)J

A metal having work function 4.41xx10^(-19) J is sunjected to a light having wavelength 300nm, then maximum kinetic energy of the emitted photoelectron is ...........xx10^(-21)J