477

SELF-ASSESSMENT CHECKLIST

I am able to ... | Section | NotÂ yet | Nearly there | Ready to move on
describe the concept of a photon | 22.1 |  |  |
calculate the energy of a photon from its frequency or wavelength | 22.1 |  |  |
describe the photoelectric effect | 22.1 |  |  |
understand the terms stopping voltage and critical frequency | 22.1 |  |  |
explain the features of the photoelectric effect in terms of photons | 22.1 |  |  |
understand why the features of the photoelectric effect are not compatible with light as a wave | 22.1 |  |  |
calculate the wavelength shift in Compton scattering | 22.1 |  |  |
describe the de Broglie hypothesis | 22.2 |  |  |
calculate the de Broglie wavelength | 22.2 |  |  |
describe an experiment that supports the wavelike characteristics of an electron | 22.2 |  |  |

REFLECTION

Can you describe light in terms of photons? Can you explain the main features of the photoelectric effect? Do you understand the role of frequency and of intensity in the photoelectric effect? Do you understand why the Compton effect is significant? Can you apply the Compton formula? How would you describe the concept of matter waves? Can you provide the experimental evidence for matter waves?

Exam-style Questions

You can find questions in the style of IB exams in the digital coursebook.