Skip to content
Back to quiz
6. If the angle of incidence (i) is less than the critical angle...
- There's quite a bit of total internal reflection
- Most of the light passes out but a little is totally internally reflected
- Little of the light passes out but a lot is totally internally reflected
- All of the light is reflected
7. If the angle of incidence (i) is equal to the critical angle...
- All of the light is reflected
- Little of the light passes out but a lot is totally internally reflected
- There's quite a bit of total internal reflection
- Most of the light passes out but a little is totally internally reflected
8. If the angle of incidence (i) is greater than the critical angle...
- There's quite a bit of total internal reflection
- All of the light is reflected
- Most of the light passes out but a little is totally internally reflected
- Little of the light passes out but a lot is totally internally reflected
9. Which of these EM waves are not used in optical fibres
- Infrared
- Ultravoilet
- Visible light
10. Optical fibres are wide in order to ensure the angle of incidence is above the critical angle.