Pressure - Jamb Physics Past Questions and Answers

Question 11:

• JAMB 1981

The principle of transmissibility of pressure in a fluid at rest in all directions is known as

A. Archimede's principle
B. Flotation Principle
C. Newton's lwa
D. Pascal's law
E. Boyle's law

Question 12:

• JAMB 1982

The hatch door of a submarine has an area of 0.5m². The specific gravity of sea water is 1.03. Assume that g = 10ms^-1,and neglect the atmospheric pressure. The force exerted by the sea water on the hatch door at a depth of 200m is

A. 1.03 x 10⁵N
B. 1.03 x 10⁴Nm^-2
C. 1.06 x 10⁵Nm^-2
D. 2.06 x 10⁶N
E. 1.03 x 10³N

Question 13:

• JAMB 1982

The hatch door of a submarine has an area of 0.5m². The specific gravity of sea water is 1.03. Assume that g = 10ms^-1,and neglect the atmospheric pressure. The force exerted by the sea water on the hatch door at a depth of 200m is

A. 1.03 x 10⁵N
B. 1.03 x 10⁴Nm^-2
C. 1.06 x 10⁵Nm^-2
D. 2.06 x 10⁶N
E. 1.03 x 10³N

Question 14:

• JAMB 1982

A hydrometer is an instrument for measuring the

A. Depth of water in a vessel
B. Relative density of a liquid by the method of flotation
C. Relative dendity of a liquid by finding the apparent loss in weight
D. Relative humidity of the air
E. Atmospheric pressure when the air is humid

Question 15:

• JAMB 1982

The water manometer above is measuring the pressure of gas supply. if the specific gravity of mercury is 13.6 and the atmospheric pressure is 70cm of mercury what is the total pressure of the gas supply in cm of water

A. 67cm
B. 73cm
C. 949cm
D. 952cm
E. 955cm