Physics A-Level
Brightness and focus controls
What Brightness and focus controls means in Physics A-Level, as defined for AQA.
Definition of Brightness and focus controls
Check what you remember
Read the wording for your board, then hide it and explain Brightness and focus controls in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
Adjust the visible spot and affect visibility only, not the voltage or time measurements.
Topics that use Brightness and focus controls
- Alternating currents (A-level only) (AQA A-Level)
Related terms
- Direct and alternating potential difference
- Measurement and unit conversion using scale settings
- Reciprocal relationship between period and frequency
- Average power
- Peak-to-peak value
- Root mean square value
- Sinusoidal waveforms
- Timebase control
Using Brightness and focus controls 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.
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