Electromagnetic spectrum — Easy
Recall and familiar applications. Optional hints help you find a first step.
Includes extension practice
The spectrum, vacuum speed and typical applications are included. Digital regeneration and detailed communication-system choices extend the listed objectives.
Easy, Normal and Difficult describe practice demand; they are not the official Core and Extended tiers.
- Cambridge IGCSE Physical Science 0652 syllabus 2025–2026 · P3.2.4, p35
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