6. Visible light can be transmitted through optical fibres by..
- Total internal reflection
- Refraction
- Reflection
7. The image produced on a plane mirror is...
- opposite
- Virtual
- Real
8. Refraction by a prism can lead to
- change of direction
- Dispersion
- Reflection
9. When light enters a more dense medium is it...
- Refracted towards the normal
- Refracted away from the normal
- Refracted along the normal
