Q. In a darkened room we place a lighted tungsten bulb in a box that has one end covered with tinfoil. If we make a pinhole in the tinfoil, an image of the filament appears on a screen facing the tinfoil.
If we now make a second pinhole just above the first, what will appear on the screen?
1. A second image of the filament above the first.
2. A larger image of the filament.
3. A brighter image of the filament.
4. A second image of the filament below the first.
5. A smaller image of the filament.