Calculate its period.
2. From speed, frequency and wavelength which one is determined by the source?
3. What will change in a wave as its energy increases?
4. State the wavelengths for red, green and blue light.
5. Name the colours visible and their order from the top of the screen.
6. Calculate the angle of refraction in the glass.
7. Calculate the refractive index for the glass.
8. Which has the greatest refractive index: red or blue light?
9. Prove that sin (θc) = 1 / n.
10. Complete the ray diagram to show the path the light takes.
11. a) Calculate the wavelength of the light in air.
b) What type or colour is this light?
c) Calculate the speed of the light in glass.
12. A light wave of wavelength 550 nm travels through air.
Calculate its frequency.
13. Complete the diagram to show the path the ray of light takes through the prism.
14. Complete the diagram to show the path the ray of light takes through the prism.
