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< h1 id = "study-topic-title" style = "font-size: 2.5rem; margin-bottom: 1rem;" > Optics & Light Questions & Formulas
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1. Reflection and Refraction
Light travels in straight lines. Snell's Law: n₁ sinθ₁ = n₂ sinθ₂. Total Internal Reflection occurs when light moves from denser to rarer medium at high angles.
2. Lenses and Mirrors
- Mirror Formula: 1/f = 1/v + 1/u.
- Lens Formula: 1/f = 1/v - 1/u.
- Power: P = 1/f (diopters).
3. Dispersion
Splitting of white light into its component colors through a prism.