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A certain metal in the photoelectric effect experiment has a work function of 2. For a given experiment, the maximum kinetic energy of the ejected...


A certain metal in the photoelectric effect experiment has a work function of 2.7 eV. For a given experiment, the maximum kinetic energy of the ejected electrons is 1.8 eV.


What is the wavelength of the incident photons?

a) 276 nm
b) 376 nm
c) 476 nm
d) 576 nm
e) 676 nm


What is the maximum wavelength of photons that would eject electrons from this metal?

a) 359 nm
b) 459 nm
c) 559 nm
d) 659 nm
e) 759 nm

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Solution:
In photoelectric effect the equation is given as:
Where
KE= kinetic energy
h= planck’s constant
c=velocity of light
ƛ= wavelength
= work function
Converting electron volt to joules: a)...

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