Understanding Pinhole Cameras

A pinhole camera is a simple device consisting of a light-proof box with a small hole on one side. Light from an object passes through this hole, projecting an inverted image on the opposite side. The size and clarity of the image depend on the distance between the screen and the hole, as well as the distance between the object and the hole. Greater distances result in larger but fainter images, while closer objects produce smaller images.

What is the primary function of the small hole in a pinhole camera?

• To let air circulate inside the box

• To adjust the focus of the image

• To provide a viewfinder for the user

• To allow light to enter and project an image

How is an image formed in a pinhole camera?

• By reflecting light off a mirror

• By light passing through a lens

• By light passing through a small hole

• By using a digital sensor

What happens to the image size when the distance between the screen and the hole is increased?

• The image becomes larger

• The image becomes smaller

• The image becomes distorted

• The image becomes clearer

If the distance between the object and the hole is increased, what happens to the image size?

• The image becomes inverted

• The image becomes brighter

• The image becomes smaller

• The image becomes larger

What is a consequence of having a larger image in a pinhole camera?

• The image becomes more colorful

• The image becomes fainter

• The image becomes brighter

• The image becomes sharper