Question

Define pinhole camera?

Answer 1

Pinhole camera:

1. The pinhole camera is the simplest kind of camera. It does not have a lens.
2. It just makes use of a tiny opening (a pinhole-sized opening) to focus all light rays within the smallest possible area to obtain an image, as clearly as possible.
3. The image formed using a pinhole camera is always inverted.
4. A pinhole camera works on the principle of rectilinear propagation of light.