Pressure in liquids - Jamb Physics Past Questions and Answers

Question 11:

• JAMB 1983

the image above shows an inverted U-tube with the open end, O of one limb below the level, W of water in the tank, in order that water should begin to flow from the tank it is is necessary that

A. The U-tube is completely filled with water and that P should be higher that W
B. P should be lower than O and W
C. P should be lower than W and O should reach the botton of the table
D. The U-tube is completely filled with water and that P should be lower that W

Question 12:

• JAMB 1985

A metal cube of volume 10³mm³ is lowered into a measuring cylinder containing water. If the internal cross-sectional area of the cylinder is 1.5 x 10²mm², by how much does the water level rise in the cylinder?

A. 6.67 x 10⁰mm
B. 8.50 x 10²mm
C. 1.15 x 10³mm
D. 2.50 x 10³mm
E. 1.50 x 10⁵mm

Question 13:

• JAMB 1986

A rectangular tank contains water to a depth of 2m, if the base is 4m x 3m, calculate the force on the base (Density of water = 10³kgm^-3, g = 10ms^-2)

A. 1.4 x 10²N
B. 24 x 10⁴N
C. 2.0 x 10⁴N
D. 1.7 x 10³N

Question 14:

• JAMB 1989

The pressure on the gas of constant gas thermometer at the ice point is 325mm of mercury and at the steam point is 875mm of mercury. Find the temperature when the pressure of the gas is 190mm of mercury

A. 30k
B. 243k
C. 300k
D. 3003k

Question 15:

• JAMB 1994

Which of these statements are TRUE of pressure in liquids? i. pressure acts equally in all direction. ii. pressure decreases with depth. iii. pressure at the same level of a liquid is the same. iv pressure is dependent on the cross-sectional area of the barometer tube

A. I, iii only
B. I, ii, iii only
C. I, iii, and iv only
D. I, ii, iii and iv