CourseCourseConceptConceptDocsDocuments

CAIE A-Level Physics A2 22.1.4 The Electronvolt Ev As a Unit of Energy Questions

Practise converting particle and photon energies between electronvolts and joules, comparing magnitudes and retaining the correct energy unit.

Syllabus
2028–2030
Course
Physics 9702
Level
A2

Exam points

  • convert and use electronvolt as a unit of energy
  • compare photon or particle energies in eV and joules

CAIE A-Level Physics A2 22.1.4 The Electronvolt Ev As a Unit of Energy Questions question 1

[Maximum number: 1]

In an experiment, electromagnetic radiation of frequency f is incident on a metal surface.

The results in Fig. 10.1 show the variation with frequency f of the maximum kinetic energy EMAX E_{\text {MAX }} of electrons emitted from the surface.

Fig. 10.1

Fig. 10.1

The work function energy in eV for some metals is given in Table 10.1.

Table 10.1

Table 10.1

Determine the metal used in the experiment. Show your working.

All question bank results loaded