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Two converging lenses, two jobs

Two converging lenses, two jobs

Schematic of an astronomical telescope with a large objective lens, short-focus eyepiece, and real intermediate image labelled

An astronomical telescope uses two converging lenses. The large objective lens at the front has a long focal length fof_{o}fo​ and receives almost parallel rays from a distant object.

Astronomical telescope consisting of two converging lenses (A-level only) Lesson

  1. A Level
  2. /Physics
  3. /Astronomical telescope consisting of two converging lenses (A-level only)

Step-by-step lessons on AQA A Level Physics Astronomical telescope consisting of two converging lenses (A-level only). Each one builds up to exam-style questions. Physics is one of the most mathematically demanding A Levels -- at least 40% of the marks require maths skills at Level 2 (GCSE) standard or above, so build calculation and graph-handling fluency alongside the conceptual content from the start.

Lessons