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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

Calculate the binding energy in eV of electrons in aluminum, if the longest-wavelength photon that can eject them is 304 nm.

To determine

The binding energy in eV of the electrons in aluminum.

Explanation

Given:

Frequency of photon =f

Wavelength of photon =λ=304 nm = 304×109 m

Speed of photon =c=3×108 ms

Energy of the photon =E=?

Plank's constant =h=4.14×1015 eV s

Formula Used:

Frequency of the photon is given as

  f=cλ

Binding energy of electrons is given as

  E=hf

Calculation:

Frequency of the photon is given as

  f=c

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