In a clinical thermometer the mercury in the capillary tube does not contract once removed from the patient because_______________?
AThe capillary tube has a small constriction near the bulb
BThe amount of mercury use is very small
CMercury takes a long time to contract
DThe capillary tube is very narrow
Correct answer
A. The capillary tube has a small constriction near the bulb
Explanation
The capillary tube has a small constriction near the bulb is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.