WAEC - Physics (2004 - No. 24)
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
74.2cm Hg
69.4cm Hg
Explication
At 77cm Hg, A.P = \(\frac{75.0 \times 72.0}{72.6} = 74.38\)