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If a monochromatic light beam with quantum energy value of 2.9 eV incident upon a photocell where the work function of the target metal is 1.8 eV, what is the maximum kinetic energy of ejected electrons?

Respuesta :

Answer:1.1 eV

Explanation:

Given

Energy(E)=2.9 eV

Work function of the target=1.8 eV

We know that

[tex]Energy(E)=W_0+KE_{max}[/tex]

Where [tex]W_0=work\ function[/tex]

[tex]2.9=1.8+KE_{max}[/tex]

[tex]KE_{max}=2.9-1.8=1.1 eV[/tex]

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