Liquids At Rest - Jamb Physics Past Questions and Answers

Question 26:

• JAMB 1998

A solid of weight 0.600N is totally immersed in oil and water respectively. If the upthrust of oil is 0.210N and the relative density of oil is 0.875. Find the upthrust in water.

A. 0.600N
B. 0.360N
C. 0.240N
D. 0.180N

Question 27:

• JAMB 1999

A solid weigh 10 .00 N in air, 6 N when fully immersed in water and 7 . 0 N when fully immersed in a liquid X. Calculate the relative density of the liquid, X.

A. 5/3
B. 4/3
C. 3/4
D. 7/10

Question 28:

• JAMB 2000

When a ship sails from salt water into fresh water, the fraction of its volume above the water surface will

A. Increase
B. Decrease
C. Remain the same
D. Increase then decrease

Question 29:

• JAMB 2000

When a ship sails from salt water into fresh water, the fraction of its volume above the water surface will

A. Increase
B. Decrease
C. Remain the same
D. Increase then decrease

Question 30:

• JAMB 2002

A copper cube weighs 0.25 N in air, 0.17N when completely immersed in paraffin oil and 0.15 N when completely immersed in water.The ratio of upthrust in oil to upthrust in water is

A. 3 : 5
B. 4 : 5
C. 7 : 10
D. 13 : 10