Liquids At Rest - Jamb Physics Past Questions and Answers

Question 31:

• 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

Question 32:

• JAMB 2003

A test tube of radius 1.0cm is loaded to 8.8g. If is placed upright in water, find the depth to which it would sink

A. 2.8cm
B. 5.2cm
C. 25.5cm
D. 28.0cm

Question 33:

• JAMB 2004

The change in volume when 450kg of ice is completely melted is
[density of ice = 900 kgm^-3, density of water = 100 kgm^-3]

A. 0.50m³
B. 0.45m³
C. 0.05m³
D. 4.50m³

Question 34:

• JAMB 2005

A 3m³ volume of liquid W of density 200kgm³ is mixed with another liquid L of volume 7m³ and density 150kgm^-3. the density of mixture is?

A. 165kgm^-3
B. 100kgm^-3
C. 265kgm^-3
D. 350kgm^-3

Question 35:

• JAMB 2005

Two liquids L₁ and L₂ are contained in a U - tube. The height and the density of L₁ are 8 cm and 10³ kgm^-3 respectively. If the density of L₂ is 800 kgm^-3, its height measured from the same level is

A. 8 cm
B. 10 cm
C. 16 cm
D. 12 cm