DDO 111 covers 12 topics. StudyPath paces them into daily study sessions that finish before your exam date, with practice questions and worked answers for each one.
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The topics this course covers, in teaching order.
One topic, as StudyPath teaches it.
The geometric behaviour of light deals with how light rays change direction when they encounter surfaces or media. Mastering the laws of reflection and refraction, Snell’s law, and the conditions for total internal reflection is essential for solving ray‑diagram problems and for understanding the operation of optical instruments.