Final answer:
The student's question pertains to calculating a dimension of a pinhole camera using principles of optical physics. Without adequate information, such as the specific distance between the pinhole and image plane or the exact meaning of 'width of the camera', we cannot determine the camera's width.
Step-by-step explanation:
The student's question relates to the optical physics of a pinhole camera, specifically finding the width of the camera based on the dimensions of the image produced and the distance from the object..
To find the width of the camera, one would typically use similar triangles, where the ratio of the object's height to the image height is the same as the ratio of the distance from the object to the pinhole and the width of the camera. However, in the case of the pinhole camera, the distance from the camera to the image plane (width of the camera) usually is not equivalent to the object distance to pinhole ratio, because what the question seems to be actually asking for is the focal length of an equivalent lens which is not possible with the given data. Furthermore, given the nature of pinhole cameras, there's no lens with a focal length, which complicates the use of lens formulas.
Without additional information, such as the actual distance from the pinhole to the image plane (which one could interpret as 'the width of the camera'), or clarifications on what exactly is meant by the 'width' of the camera, it's impossible to accurately calculate the missing dimension.