Q32 of 35 Page 143

Assuming the density of air to be 1.295 kg per m cube find the fall in barometric height in mm of Hg at the height of 107 m above the sea level. Take density of mercury =13.6 * 1000 kg per m cube.

Pressure = 1.295 kg/m3 = P

For, P = pgh where, p is density = 13.6 × 103


g is acceleration due to gravity = 9.8m/s2


h is barometric fall = ?


P = p × g × h


1.295 = 13.6 × 103 × 9.8 × h


= h


h = 10. 18m


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