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10 questions
The diagram shows an apparatus set up to measure atmospheric pressure.
Calculate the pressure at point Q.
10 cm Hg
85 cm cm Hg
90 cm Hg
15 cm Hg
The diagram shows a set up of apparatus for measuring atmospheric pressure. If the density of mercury is
13,600 kgm-3, determine the atmospheric pressure as measured by the instrument.
100,000 Pa
101,000 Pa
123,760 Pa
103,360 Pa
The barometer shows the reading when the atmospheric pressure is 101,000 Pa. The height of the column of mercury is h. What is the pressure at point X?
0 Pa
25,250 Pa
75,750 Pa
101,000 Pa
The figure shows a simple barometer with some air trapped in the tube. Given that atmospheric pressure is 76 cm Hg, find the pressure of the trapped air.
21 cm Hg
24 cm Hg
45 cm Hg
55 cm Hg
A barometer is used to determine the pressure of the atmosphere. The barometer shows the pressure on a particular day. If the density of mercury is 13,600 kg m-3, what is the reading of the barometer?
101,000 Pa
102,000 Pa
10,200 Pa
1,020 Pa
The barometer in the diagram shows the measurement of the atmospheric pressure. At sea level, the atmospheric pressure is 76 cm Hg. Why is the reading of this barometer different?
The barometer is broken
The barometer is measuring water pressure
The barometer is below sea level
The barometer is above sea level
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