The work function of potassium is 2.0eV when it is illuminated by light of wavelength 3300angstrom photo electrons are emitted the stopping potential of photo electron is
Asked by abduljaffer789
10th September 2018,
12:40 AM
Answered by Expert
Answer:
Einsteins Photo electric equation is " eV = h×(c/λ) - φ0 " ....................(1)
where eV is stopping potential in electron-volt, h is plancks constsant, c is speed of light, λ is wavelength and φ0 is work function.
substitututing the given data, φ0 = 2 eV and λ = 3300 Aº with the required constants, we get
= 1.76 V
Answered by Expert
10th September 2018,
12:55 PM
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