Gce Model Questions Vol1 2019 Physics Question 37
Practice objective / multiple choice question 37 from the 2019 Gce Model Questions Vol1 Physics examination.
A metal surface has a work function of \(2.2\ \text{eV}\). Light of wavelength \(250\ \text{nm}\) shines on the surface, causing photoelectrons to be emitted. These electrons are then accelerated through a potential difference \(V\) and strike a target that emits characteristic K\(\alpha\) X‑rays of wavelength \(0.154\ \text{nm}\). Assuming the kinetic energy of the electrons after acceleration is completely converted into the X‑ray photon energy, calculate the required accelerating potential \(V\) (in volts).
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About This Question
This is Gce Model Questions Vol1 2019 Physics Question 37. It is one of the objective questions from the 2019 Gce Model Questions Vol1 Physics examination.
Difficulty level: Hard .
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