This question is about the reflection of light.
Light reflects from a plane mirror.
State how the angle of reflection compares to the angle of incidence. Choose from the following terms:
An object is placed at a distance of 25 cm in front of a vertical plane mirror. Determine the distance between the object and its image.
The image formed by a plane mirror is a virtual image. State how a virtual image differs from a real image in terms of light rays.
Light can travel along optical fibres.
State the name of the wave phenomenon that allows light to be guided along the core of an optical fibre without escaping through the sides.
State two conditions required for this phenomenon to happen.
Broadbands send signals along optical fibres rather than using electrical currents in copper wires. Suggest one advantage of using optical fibres instead of copper wires.