Question

What is a pinhole camera?

Answer 1

$Pinholecamera:-$ A pinhole camera$,$ also known as camera obscura$,$ or $darkchamber,$ is a simple optical imaging device in the shape of a closed box or chamber$.$ In one of its sides is a small hole which$,$ via the rectilinear propagation of lighht$,$ creates an image of the outside space on the opposite side of the box$.$