Liquids At Rest - Jamb Physics Past Questions and Answers

Question 56:

• JAMB 2016

A body which weighs 50N in air displaces 3.7kg of water when partially immersed in water. Calculate the upthrust on the body?

A. 8.7N
B. 37.0N
C. 87.0N
D. 13.0N

Question 57:

• JAMB 2017

Calculate the upthrust on an object of volume 50cm3 which is immersed in liquid of density 103kgm-3 [g = 10ms-2]

A. 0.8N
B. 2.5N
C. 0.5N
D. 1.0N

Question 58:

• JAMB 2017

The instrument to measure the relative density of liquid is

A. Thermometer
B. Hydrometer
C. Spring balance
D. Beaker

Question 59:

• JAMB 2018

The density of 400cm of palm oil was 0.9gcm-3 before frying. If the density of the oil was 0.6gm-3 after frying, assuming no loss of oil due to spilling, its new volume was?

A. 1360cm\(^3\)
B. 600cm\(^3\)
C. 240cm\(^3\)
D. 8000m\(^3\)

Question 60:

• JAMB 2018

A solid cube of side 50cm and mass 75kg floats in a liquid with \(\frac{1}{3}\) of its height above the liquid surface. The relative density of the liquid is?

A. 0.33
B. 0.50
C. 0.67
D. 0.90