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

Question 1:

• JAMB 2019

If the time of flight is 96seconds, calculate the horizontal range through the point of projection.

A. 84400m
B. 69000m
C. 61440m
D. 24000m

Question 2:

• JAMB 1981

A solid weighs 4.8g in air, 2.8g in water and 3.2g in kerosine. The ratio of density of the solid to that of the kerosine is

A. 12
B. 3
C. 2
D. \(\frac{3}{2}\)
E. \(\frac{5}{4}\)

Question 3:

• JAMB 1982

Why does a piece of cork float on water?

A. There is no upthrust on it when completely immersed in water
B. The upthrust on it when completely immersed in water is greater than its weight in air
C. The upthrust on it when completely immersed in water is less than its weight in air
D. Its specific gravity is greater than that of water
E. Its specific gravity is the same as that of water

Question 4:

• JAMB 1984

What volume of alcohol with a density of 8.4 x 10²kgm^-3 will have the same mass as 4.2m³of petrol whose density is 7.2 x 10²kgm^-3?

A. 14m³
B. 3.6m³
C. 4.9m³
D. 5.0m³
E. 5.8m³

Question 5:

• 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