Neco Model Questions Vol1 2023 Physics Question 27
Practice objective / multiple choice question 27 from the 2023 Neco Model Questions Vol1 Physics examination.
Monochromatic light of wavelength \(\lambda\) strikes a metal surface whose work function is \(\phi\) (in eV). The stopping potential measured is \(V_{1}=1.2\text{ V}\). When the wavelength is reduced by 20\%, the stopping potential increases by \(0.5\text{ V}\). Determine the initial wavelength \(\lambda\) (in nm) and the work function \(\phi\) (in eV).
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About This Question
This is Neco Model Questions Vol1 2023 Physics Question 27. It is one of the objective questions from the 2023 Neco Model Questions Vol1 Physics examination.
Difficulty level: Hard .
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