Final answer:
A notary seal must indeed be photographically reproducible to ensure the seal can be authenticated in document reproductions. In photoconductive cells, a current can be created even with a single expelled electron from a photon strike.
Step-by-step explanation:
The statement that a notary seal must be photographically reproducible is True. This requirement ensures that when documents are copied or scanned, the seal can still be clearly recognized and authenticated in the reproduction. Historically, seals had different purposes and could be valued for the magic they were thought to possess or for their beauty. In modern applications, however, the practical function of a seal's reproducibility is paramount in legal documentation.
Regarding the question about a photoconductive cell, the statement that a current is created even if only one electron is expelled from a photon strike is True. A photoconductive cell, also known as a photodetector or photocell, generates electric current when it is exposed to light. When photons strike the cell, they can expel electrons, which in turn generate a current, even if it is just from a single electron.