Liquids At Rest - Jamb Physics Past Questions and Answers

Question 11:

• JAMB 1988

A body whose mass is 2kg and has a volume of 500cm3 just floats when completely immersed in a liquid. Calculate the density of the liquid

A. 4.0 x 10²kgm^-3
B. 4.0 x 10³kgm^-3
C. 1.0 x 10³kgm^-3
D. 1.0 x 10⁶kgm^-3

Question 12:

• JAMB 1989

A piece of wood of mass 40g and uniform cross-sectional area of 2cm² floats upright in water. The length of the wood immersed is

A. 30cm
B. 40cm
C. 20cm
D. 2cm

Question 13:

• JAMB 1990

40m³ of liquid is mixed with 60m³ of another liquid Q. If the density of P and Q are 1.00kgm^-3 and 1.6kgm^-3 respectively, what is the density of the mixture?

A. 0.05kgm^-3
B. 1.25kgm^-3
C. 1.30kgm^-3
D. 1.36kgm^-3

Question 14:

• JAMB 1991

The mass of a stone is 15.0g when completely immersed in water and 10.0g when completely immersed in a liquid of relative density 2.0. The mass of the stone in air is

A. 5.0g
B. 12.0g
C. 20.0g
D. 25.0g

Question 15:

• JAMB 1991

In which of the following is surface tension important?

A. The floating of a ship in water
B. The floating of a dry needle in water
C. The floating of a baloon in air
D. The diffusion of sugar solution across a membrane