alleryStart learning →Atmospheric pressure at sea level is about
A1.013 x 10^3 Pa only at sea level
B1.013 x 10^5 Pa (or 760 mm of mercury)
C1.013 x 10^7 Pa only at sea level
D1.013 x 10^1 Pa only at sea level
Answer & Solution
Correct answer: B. 1.013 x 10^5 Pa (or 760 mm of mercury)
1. The chapter section on atmospheric pressure gives the value.
2. At sea level the column of air gives a pressure of 1.013 x 10^5 Pa.
3. This equals 760 mm Hg.
4. So option A is correct.
_Source: Selina Concise Physics Class 9, Ch 4 Pressure in Fluids and Atmospheric Pressure (Mistral OCR'd PDF), section on atmospheric pressure_
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