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
Correct Answer:
Option D = 76 cm at sea level
Explanation
The height of the mercury column serves as an indicator of atmospheric pressure. At sea level and at a temperature of 0° 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.
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