Refraction

Refraction

1. Define

   • Refraction
   • Refractive Index
   • Critical Angle
   • Total Internal Reflection

2. State

   • Laws of Refraction of Light
   • Snell's Law

3. Explain

   • Real Depth
   • Apparent Depth
   • Optical Fibre

4. Experiments

   • Demonstrate Refraction
   • Verify Snell's Law
   • Measure Refractive Index
   • Demonstrate total internal reflection

5. Formulae

   • n = Sin i / Sin r
   • n = real depth/apparent depth
   • n = 1/Sin C

6. List

   • Practical effect due to refraction

7. Show

   • How a prism can be used to turn a ray of light through 90 and 180

8. Recall that :

   • Reflective road signs, mirages, prism reflectors and optical fibres are based on total internal reflection