The image formed by a pinhole camera is real. Which of the following statements offers a suitable explanation for this fact ?

Correct Option: Light travels in a straight line.

Explanation:

A pinhole camera works on the fundamental principle of the rectilinear propagation of light, which states that light travels in straight lines.

When light rays from the top and bottom of an object pass through the narrow pinhole, they continue traveling in straight lines without bending. The ray coming from the top of the object travels downward through the pinhole and strikes the lower part of the screen. Similarly, the ray from the bottom of the object travels upward through the pinhole to strike the upper part of the screen.

Because actual light rays physically intersect at the screen to form the image, the image produced is real and inverted. Thus, the fact that light travels in a straight line explains why a pinhole camera forms a real image.