Final answer:
The overall magnification of 250,000 for a microscope with an objective of 0.500 cm focal length and an eyepiece of 5.00 cm focal length is unrealistic when compared to the typical magnification capacities of standard microscopes.
Step-by-step explanation:
The subject of this question is Physics, and it appears to be appropriate for a student at the High School level. The question is whether a microscope with certain specifications (an objective with a 0.500 cm focal length and an eyepiece with a 5.00 cm focal length) that results in an overall magnification of 250,000 is realistic. To answer, we can compare it with known magnifications of microscopes. For instance, a simple light microscope can magnify up to about 1,500 times, whereas an electron microscope can magnify up to about 1,000,000 times.
If we consider the magnifying power of typical microscopes, an overall magnification of 250,000 seems unreasonable for a microscope with the given lens focal lengths. Such high magnification is typically achieved with specialized equipment, such as an electron microscope, not a standard light microscope with those lens parameters.