1 atm (Atmospheric Pressure) is equal to:
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → \(1.01\times10^{5}\,\mathrm{N/m^2}\)
One atmosphere (1 atm) is the average pressure of the air at sea level. It equals the pressure of a column of mercury 76 cm high, which works out to 101325 N/m2 (pascal), or about \(1.01\times10^{5}\,\mathrm{N/m^2}\).