To Measure Moderately Low Pressures Oil with a Density of 8.5

Multiple Choice

To measure moderately low pressures oil with a density of 8.5 x 10² kg/m³ is used in place of mercury in a barometer.A change in the oil column of 1.0 mm indicates a change in pressure of about:

A) 1.2 x 10^-7 Pa
B) 1.2 x10^-5 Pa
C) 0.85 Pa
D) 1.2 Pa
E) 8.3 Pa