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Svetllana [295]
3 years ago
7

A monochromatic light beam with a quantum energy value of 4.3 ev is incident upon a photocell. the work function of the photocel

l is 2.2 ev. what is the maximum kinetic energy of the ejected electrons?
Physics
2 answers:
Black_prince [1.1K]3 years ago
7 0
Give me some answer choices and i will be happy to help
olganol [36]3 years ago
7 0

As per Einstein's Photo electric effect theory

E = \phi + KE

the energy which incident in form of photon will be absorbed by the metal surface and some of the energy is released in form of KE of ejected electrons

E = 4.3 eV

\phi = 2.2 eV

now from the above equation

E = \phi + KE

4.3 = 2.2 + KE

KE = 2.1 eV

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