You will have covered these topics in the 2.2 Research internal unit ...
Refraction
Refractive index, wave speed in different mediums, and frequency
Refraction
Snell’s Law in action
Total Internal Reflection
Finding the Critical Angle
Refraction and lenses
Concave and convex 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)
Refraction
Refractive index, wave speed in different mediums, and frequency
Refraction
Snell’s Law in action
Total Internal Reflection
Finding the Critical Angle
Refraction and lenses
Concave and convex 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)