I want to know the answer to the following question:
What video frequency does PAL use?
All the background I'm provided with is that "PAL consoles face another incompatibility when playing out-of-region cartridges: the NTSC video standard specifies video at 60 Hz while PAL operates at 50 Hz, resulting in approximately 16.7% slower gameplay.". Is that enough to answer the question?
Answer: yes