The primary property of light used in a pinhole camera is that light travels in a straight line. The size of the hole matters since a hole too large will allow light from multiple angles causing the image to blur .
What are the two properties of pinhole camera?
The image in a pinhole camera has the following characteristics:
- The image in a pinhole camera is inverted (upside down) as compared to the object.
- The image in a pinhole camera is real (because it can be formed on a screen).
- The image in a pinhole camera is of the same colour as the object.
On which principle is the pinhole camera based?
Pinhole cameras rely on the fact that light travels in straight lines – a principle called the rectilinear theory of light. This makes the image appear upside down in the camera.
