Final answer:
During an X-ray exposure, neither the image receptor nor the X-ray tube head moves relative to one another; they both remain stationary as the X-rays are directed towards the area being imaged.
Step-by-step explanation:
The question pertains to the arrangement of the image receptor and the X-ray tube head during an X-ray exposure. Specifically, it asks in which direction these components move relative to the patient's body. In the case of dental X-rays, which are commonly used for imaging teeth and bones, the tube head does not typically move during the exposure; instead, the X-ray beams are directed towards the area of interest. The image receptor, which captures the X-rays after they pass through the body, is typically placed in a fixed position relative to the patient's body, opposite the X-ray tube head.
Therefore, for the options provided, the most accurate answer to the question would be:
- (d) Neither the source (X-ray tube head) nor the observer (image receptor) is moving relative to one another during the exposure.
This is because both the X-ray tube and the image receptor remain stationary while the X-ray exposure is taking place.