A faulty barometer reads 72.6cm Hg when the atmospheric pressure is 75.0cm Hg. Calculate the…

Physics WAEC 2004

A faulty barometer reads 72.6cm Hg when the atmospheric pressure is 75.0cm Hg. Calculate the atmospheric pressure when the barometer reads 72.0cn Hg

  • 79.4cm Hg
  • 74.38cm Hg checkmark
  • 74.2cm Hg
  • 69.4cm Hg

The correct answer is: B

Explanation

At 77cm Hg, A.P = \(\frac{75.0 \times 72.0}{72.6} = 74.38\)
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