Unit 6 • Optics

Unit 6 — Review

Consolidate your understanding of reflection, refraction, mirrors, and lenses before the summative assessment.

📚 Unit Overview

Unit 6 covered the behavior of light as it interacts with surfaces and transparent materials. You explored:

  • The law of reflection and ray diagrams
  • Specular vs. diffuse reflection
  • Refraction and Snell's Law
  • Total internal reflection and critical angle
  • Image formation in plane and curved mirrors
  • Converging and diverging lenses
  • The thin lens equation and magnification

Key Equations:

  • Law of Reflection: θᵢ = θᵣ
  • Snell's Law: n₁ sin θ₁ = n₂ sin θ₂
  • Mirror/Lens Equation: 1/f = 1/dₒ + 1/dᵢ
  • Magnification: M = -dᵢ/dₒ = hᵢ/hₒ

✅ Review Checklist

  • ◻ I can apply the law of reflection to predict ray paths.
  • ◻ I can use Snell's Law to calculate refraction angles.
  • ◻ I can determine when total internal reflection occurs.
  • ◻ I can locate images using ray diagrams for mirrors.
  • ◻ I can locate images using ray diagrams for lenses.
  • ◻ I can use the thin lens equation to solve problems.
  • ◻ I can calculate magnification and describe image properties.

🔗 Quick Links

🎓 Study Resources

  • 📝 Practice Problems
  • 🧩 Blooket Review Game
  • 📘 Unit Summary Notes

➡️ Next Steps

Once you feel confident with the review checklist, proceed to the summative assessment.

Take Summative Assessment