In a perfect vacuum of 29.92, the micron gauge will read ____.
A) 25,400
B) 500
C) 250
D) 25

Question

Quizplus · Accepted Answer

In a perfect vacuum, the pressure is zero, which corresponds to 0 microns. However, atmospheric pressure at sea level is approximately 29.92 inches of mercury (inHg), which is 760,000 microns. Therefore, the micron gauge should read close to zero or a very low value, such as 25 microns, which is option D. Options A, B, and C are too high for a perfect vacuum.

In a Perfect Vacuum of 29