The horizontal line at zero units is marked with vertical divisions in
A) milliseconds
B) microseconds
C) tenths of microseconds
D) both B and C

Question

Quizplus · Accepted Answer

The question implies that the division markings are very fine, which suggests that the unit of time being used is very small. Both microseconds and tenths of microseconds are suitable for such fine divisions, and since the question doesn't specify between the two, either answer is correct.

The Horizontal Line at Zero Units Is Marked with Vertical