Final answer:
The interference with the radiology equipment in the hospital can be attributed to the luminaire's proximity and electrical characteristics.
Step-by-step explanation:
The interference with the radiology equipment in the hospital can be attributed to the luminaire's proximity and electrical characteristics. The size of the luminaire may also play a role, but it is less likely to be the main cause of the EMI problems. The spectral power distribution, which refers to the distribution of power across different wavelengths of light, is not directly related to the interference experienced by the radiology equipment.