please help 1) Ultraviolet light with a wavelength of 200 nm is incident on a me

Question

please help
1) Ultraviolet light with a wavelength of 200 nm is incident on a metal that has a work function of 2.50 eV. find the maximum kinetic energy that an electron from the metal can possess please help
1) Ultraviolet light with a wavelength of 200 nm is incident on a metal that has a work function of 2.50 eV. find the maximum kinetic energy that an electron from the metal can possess
1) Ultraviolet light with a wavelength of 200 nm is incident on a metal that has a work function of 2.50 eV. find the maximum kinetic energy that an electron from the metal can possess

Explanation / Answer

Here ,

energy of incident photon, E = h*c/(wavelength * e)

E = h * 3*10^8 /(200 *10^-9 * e)

E = 6.204 eV

Now,

E = Wf + KEmax

6.204 = 2.5 + KEmax

KEmax = 3.704 eV

the maximum kinetic energy that an electron from the metal can possess is 3.704 eV

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