Concept:Parallel rays striking a total reflecting prism must emerge parallel without changing the order of the rays.
Explanation:Treat the upper ray as coming from the top of the distant object and the lower ray as coming from the bottom.
After the beam passes through the prism, the upper ray must still form the top of the image and the lower ray must form the bottom.
In diagrams X, Y, and Z, the rays keep the correct order after emerging from the prism.
Only in diagram W does the ray from the top of the object form the lower part of the image, which is incorrect.
Answer:The diagram that does not represent the correct path is A. W.
