Physics A-Level
Convex secondary mirror
What Convex secondary mirror means in Physics A-Level, as defined for AQA.
Definition of Convex secondary mirror
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Reference: AQA
Placed before the primary focus, it reflects the converging beam back through a hole in the centre of the primary mirror.
Topics that use Convex secondary mirror
- Reflecting telescopes (A-level only) (AQA A-Level)
Related terms
- Aperture stop
- Chromatic aberration
- Folded optical path
- Formation of a real intermediate image
- Optical ray construction and labelling
- Parabolic mirror
- Reflection at curved and plane surfaces
- Central obstruction
Using Convex secondary mirror in the exam
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