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College Physics

1st Edition
Paul Peter Urone + 1 other
ISBN: 9781938168000

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BuyFindarrow_forward

College Physics

1st Edition
Paul Peter Urone + 1 other
ISBN: 9781938168000
Textbook Problem

UV radiation having a 300-nm wavelength falls on uranium metal, ejecting 0.500-eV electrons. What is the binding energy of electrons to uranium metal?

To determine

The binding energy in eV of the electrons ejected from sodium metal.

Explanation

Given:

Wavelength of radiation =λ=300 nm = 300×109 m

Speed of radiation =c=3×108 ms

Energy of the radiation =E=?

Binding Energy of electrons =Wo

Plank's constant =h=4.14×1015 eV s

Maximum kinetic energy of the electrons =KEmax=0.500 eV

Formula Used:

Energy of radiation is given as

  E=hcλ

Binding energy is given as

  Wo=EKEmax

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