Unit - 3.3 Pressure Exerted By Gases – Atmospheric Pressure — PHYSICS STD 8 — Question
ICSE BoardEnglish MediumSTD 8PHYSICSUnit - 3.3 Pressure Exerted By Gases – Atmospheric Pressure1 Mark
Question
How does atmospheric pressure change with the change in altitude ?
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Answer
The atmospheric pressure varies with altitude as density of air decreases as we rise up and air becomes rarer. For example: Pressure at sea level is taken as 76 cm of Mercury Column, which is one atmosphere. For every 105m rise in height, pressure decreases by 1 cm of mercury column
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