The mercury column in the barometer at notational atmospheric pressure has a height of?
A
0.76 cm at see level
B
760 cm at sea level
C
7.6 cm at sea level
D
76 cm at sea level
Verified Correct Answer: D.
Physical Principles & Numerical Solution
The height of the mercury column serves as an indicator of atmospheric pressure. At sea level and at a temperature of 0^\circ Celsius (C), the height of the mercury column is approximately 30 inches, or 76 centimeters. This represents a pressure of approximately 14.7 psia. The 30-inch column is used as a reference standard.
Source: WAEC / JAMB / NECO Classroom Archive (Record #65092)