Skip to content

Home
Subjects
Past Papers
Key Terms

My Courses

Select your courses

Subjects

History
Geography
Biology
Chemistry
Physics
Mathematics

Resources

Browse Courses
Past Papers
Key Terms & Definitions
Pricing

About

Sign Up
Log In
Privacy Policy
Terms of Service

© 2026 GradeGen.AI

Not affiliated with any exam board.

Photons — OCR Physics A Definition | GradeGen.AI

Courses
Physics A
Key Terms
Photons

GCSEOCRJ249

Photons

Key term for OCR GCSE Physics A, used in Radioactive emissions.

Definition

Discrete packets or "quanta" of electromagnetic energy.

Exam Context

Photons appears in OCR GCSE Physics A revision content for Radioactivity, especially Radioactive emissions and Radiation absorption and emission.

Radioactivity Radioactive emissions Radiation absorption and emission

Found in Revision Notes

Radioactivity

Radiation absorption and emission

Radioactive emissions • Radiation absorption and emission

Related Key Terms

De-excitation Energy levels Excitation Excited state

Revise Physics A with GradeGen.AI

Create a free account to access OCR GCSE Physics A revision notes, track progress, and practise related key terms.

Sign Up to Start Revising Log In