alleryStart learning →Pressure of a column of mercury 76 cm tall at sea level corresponds to
A1 atmosphere
B0.5 atmosphere only
C2 atmospheres only
D10 atmospheres only
Answer & Solution
Correct answer: A. 1 atmosphere
1. Standard atmospheric pressure equals the weight of a 76 cm column of mercury.
2. Section on units lists this equivalence.
3. So 76 cm Hg = 1 atmosphere.
4. Hence option A is correct.
_Source: Selina Concise Physics Class 9, Ch 4 Pressure in Fluids and Atmospheric Pressure (Mistral OCR'd PDF), section on units_
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