Physics A-Level
Ratio method
What Ratio method means in Physics A-Level, as defined for AQA.
Definition of Ratio method
Check what you remember
Read the wording for your board, then hide it and explain Ratio method in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
Forming a ratio such as P₁/P₂ = (r₁²T₁⁴)/(r₂²T₂⁴) so that σ and 4π cancel, then solving for the unknown quantity.
Topics that use Ratio method
Related terms
- Black body
- Intensity–wavelength curve
- Inverse-square law
- Peak wavelength
- Stefan constant
- Stefan's law
- Wien's displacement law
- Black-body radiator
Using Ratio method in the exam
Check the command word and mark scheme for your exact question. After comparing your explanation with the reference, use the term in an answer on the linked topic. This practice does not predict an exam mark.
Practise Physics questions
Create a free account to answer exam-style questions on this topic and get feedback on your answers.
Start free
All Physics A-Level termsA week of Premium from your first lesson · Then the free plan continues · No card, no charge