Physics A-Level
Folded optical path
What Folded optical path means in Physics A-Level, as defined for AQA.
Definition of Folded optical path
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Reference: AQA
The convex secondary increases the effective focal length and allows a long focal length to be folded into a compact tube.
Topics that use Folded optical path
- Reflecting telescopes (A-level only) (AQA A-Level)
Related terms
- Aperture stop
- Chromatic aberration
- Convex secondary mirror
- Formation of a real intermediate image
- Optical ray construction and labelling
- Parabolic mirror
- Reflection at curved and plane surfaces
- Central obstruction
Using Folded optical path in the exam
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