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
-
A.
79.4cm Hg -
B.
74.38cm Hg -
C.
74.2cm Hg -
D.
69.4cm Hg
Correct Answer: Option B
Explanation
At 77cm Hg, A.P = (frac{75.0 times 72.0}{72.6} = 74.38)