The diagram illustrates two plane mirrors set at $90^\circ$ to each other. A ray of light strikes one of the mirrors. It is reflected from both mirrors before it arrives at a screen. At which labelled point does the ray hit the screen?
Physics 0625 · IGCSE · Light
The diagram illustrates two plane mirrors set at $90^\circ$ to each other. A ray of light strikes one of the mirrors. It is reflected from both mirrors before it arrives at a screen. At which labelled point does the ray hit the screen?