Atmospheric Pressure - Jamb Physics Past Questions and Answers

Question 31:

• JAMB 2019

Which of these is observed when air is pumped out of a discharge tube without lowering its pressure

A. The conductivity of the air increases
B. The conductivity of the air decreases
C. Conduction does not occur
D. Spark are produced

Question 32:

• JAMB 2019

The height at which the atmosphere cases to exist is about 80km. If the atmospheric pressure on the ground level is 760mmHg, the pressure at a height of 20km above the ground level is
(ρm = 13.6g/cm\(^3\) ρ = 0.00013g/cm\(^3\) )

A. 380mmHg
B. 570mmHg
C. 190mmHg
D. 480mmHg

Question 33:

• JAMB 2020

Two divers G and H are at depths 20m and 40m, respectively below the water surface in a lake. The pressure on G is O\(_1\) while the pressure on H is P\(_2\), If the atmospheric pressure is equivalent to 10m of water, then the value of P\(_2\)/P\(_1\) is

A. 0.50
B. 0.60
C. 1.67
D. 2.00