Photon energy and stopping potential
Your calculation is sound. The next step is connecting each value to the photon model.
Hello, Alex!
AQA A-level Physics (AS)
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4 days
Best: 9 days
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47
+9 this week
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Particles and radiation
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Particles and radiationDeveloping · 64% observed
Spec refs: 3.2.1, 3.2.2
Evidence: Sample PhysicsUK Exam Studio, MCQ and PhysicsUK Solve work
Evidence: Sample PhysicsUK Exam Studio, MCQ and PhysicsUK Solve work
WavesStrong evidence · 82% observed
Spec refs: 3.3.1, 3.3.2
Evidence: Sample PhysicsUK Exam Studio, MCQ and PhysicsUK Solve work
Evidence: Sample PhysicsUK Exam Studio, MCQ and PhysicsUK Solve work
Mechanics and materialsEvidence building · 38% observed
Spec refs: 3.4.1, 3.4.2
Evidence: Sample PhysicsUK Exam Studio, MCQ and PhysicsUK Solve work
Evidence: Sample PhysicsUK Exam Studio, MCQ and PhysicsUK Solve work
ElectricityNeeds practice · 32% observed
Spec refs: 3.5.1, 3.5.2
Evidence: Sample PhysicsUK Exam Studio, MCQ and PhysicsUK Solve work
Evidence: Sample PhysicsUK Exam Studio, MCQ and PhysicsUK Solve work
Recent activity
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PhysicsUK Exam Studio: Photoelectric effect · 4 / 6
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MCQ practice: Particles and radiation · 8 / 10
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QWC: Particles and radiation · Feedback saved
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PhysicsUK Solve: Photon energy and stopping potential · Completed
More detail — coach note, feedback & timeline
Coach's note
Connect the calculation to the model
Your numerical work is reliable. Add the physical meaning of each step to gain explanation marks.
- Photon energy — Your substitution was accurate in two recent questions.
- One-to-one interaction — The photon-electron link was missing from a longer explanation.
After each equation, add one sentence explaining what the result means physically.
A focused photoelectric task should make that link automatic.
Latest marks & feedback
PhysicsUK Exam Studio: Photoelectric effect
What worked: Correct use of photon energy and the threshold condition.
Improve: State that one photon transfers its energy to one electron.
View full feedbackThings to watch
Photon interactions
Keep the one-photon, one-electron energy transfer explicit.
Course timeline
We only set work on what your class has reached — keep this up to date.