Question: What is the approximate standard atmospheric pressure in millibars (mbar)? (MCAER 2020)
Options:
1013.25 mbar
101.325 mbar
10.1325 mbar
1.01325 mbar
✅Explanation: The standard atmospheric pressure at sea level is approximately 1013.25 millibars (mbar), also equivalent to 101,325 Pascals (Pa).
🔴 Important Points:
-Standard Atmospheric Pressure: 1013.25 mbar or 101,325 Pa.
-Air Pressure: Measured using a mercury barometer or aneroid barometer.
-Atmospheric Pressure: The force or thrust exerted on a unit area by the atmospheric air.
-Approximate Value: 1.013 x 105 Pa, or 0.760 mHg at 0 °C.
-Standard Sea-Level Pressure: 101325 Pa.