Answer:
It decreases
Step-by-step explanation:
"The field of view is largest on the lowest power objective. When you switch to a higher power, the field of view closes in towards the center. You will see more of an object on low power. Therefore, it is best to find an object on low power, center it, and then switch to the next higher power and repeat."
Reference: Northern Arizona University. “Microscope Notes.” Microscopy, 2019