Determination of density of solids and liquids - Jamb Physics Past Questions and Answers

Question 11:

• JAMB 2007

A piece of iron weights 250 N in air and 200 N in a liquid of density 1000 kgm^-3. the volume of the iron is?

A. 5.0 x 10^-2 ms^-2
B. 4.5 x 10^--2 ms^-3
C. 2.5 x 10^-2 ms^-8
D. 2.0 x 10^-2 ms^-3

Question 12:

• JAMB 2009

A plastic sphere floats in water with 50% of its volume submerged. if it floats in glycerine with 40% of its volume submerged,the density of the glycerine is?

A. 1400 kgm^-3
B. 1250 kgm^-3
C. 500 kgm^-3
D. 1000 kgm^-3

Question 13:

• JAMB 2010

The density of a certain oil on frying becomes 0.4 kgm\(^{-3}\) with the volume of 20m\(^{3}\). what will be its initial volume when its initial density is 0.8 kgm\(^{-3}\) assuming no loss of oil due to spillage?

A. 12m³
B. 10m³
C. 8m³
D. 5m³

Question 14:

• JAMB 2010

The density of a certain oil on frying becomes 0.4 kgm\(^{-3}\) with the volume of 20m\(^{3}\). what will be its initial volume when its initial density is 0.8 kgm\(^{-3}\) assuming no loss of oil due to spillage?

A. 12m³
B. 10m³
C. 8m³
D. 5m³

Question 15:

• JAMB 2013

A piece of cork floats in a liquid. What fraction of its volume will be immersed in the liquid?
[Density of the cork = 0.25 x 10³kgm^-3, Density of the liquid = 1.25 x 10³kgm^-3]

A. 0.8
B. 0.5
C. 0.2
D. 0.1