# Year 12 Waves (NCEA Level 2)

### Light

Properties of Light and the Electromagnetic Spectrum

**Reflection**

Reflection and the equal angle law (plane mirrors)

Ray diagrams for curved mirrors (part 1 – conventions + convex)

Ray diagrams for curved mirrors (part 2 – concave 1)

Ray diagrams for curved mirrors (part 3 – concave 2)

Descarte’s Formula and Newton’s Formula

Ray diagrams and calculations for curved mirrors (example)

**Refraction**

Refractive index, wave speed in different mediums, and frequency

**Refraction and lenses**

Ray diagrams for lenses (part 1)

Ray diagrams for lenses (part 2)

Descartes Formula (revisited for lenses)

Prisms (dispersion and total internal reflection)

Ray diagram extras (alternative rays for mirrors and lenses)

### Waves

Introduction to Waves + Wave Equations

Light, Sound, and Electromagnetic Waves

Transmission and Reflection of Pulses

Transmission and Refraction of Waves

Interference (Two Point Source)