Question

What happens to the image when
the distance between pinhole and
the screen is reduced in a pinhole camera​

Answer 1

Pinhole cameras use the principle of rectilinear propagation of light. ... If the distance between the pinhole and screen is reduced, the size of the image will decrease and the image will become bright since the light spreads over a small area.

Answer 2

Explanation:

Light intensity at the film plane decreases with the square of the distance between the pinhole and the film plane, so you need to increase exposure. This is equivalent to normal photography, however, as the amount of gathered light is proportional with the square of the pinhole