Physics GCSE
real focus
What real focus means in Physics GCSE, as defined for AQA.
Definition of real focus
Check what you remember
Read the wording for your board, then hide it and explain real focus in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
The focus is real because real light rays actually meet there, so a screen placed at that point shows a bright spot.
Topics that use real focus
- Lenses (physics only) (AQA GCSE)
Related terms
- always virtual
- arrowheads in or out
- converging and diverging
- diverging lens
- dotted projections
- magnifying glass
- matched comparison
- real image
Using real focus in the exam
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