Archimedes principle and law of flotation questions | form one Physics

As one goes far away from the Earth, the density of air
A.becomes bigger

B. becomes less
C. remains constant

D. increases twice.

A ferry boat floats in seawater because its density is

•  greater than that of water
• smaller than that of water
• the same as its weight 
• greater than its weight.

When a body floats in a liquid:
A. its weight is less than the upthrust on it
B. its weight is greater than the upthrust on it
C. its weight is equal to the upthrust on it
D. its volume is equal to the volume of liquid displaced.

When a body floats in water:
A. It displaces its own volume of water.
B. The mass of the water displaced by the body is equal to its own mass
C. It weighs the same as in air
D. The downthrust is more than the upthrust.

Differentiate between the real weight and apparent weight of an object as applied
in Physics

A solid weighs 64 N in air and 48 N when totally immersed in a liquid of denisty
0.8 g/cm 3 .Calculate:
(i) The upthrust on the solid.
(ii) The volume of the solid.
(iii) The density of the solid.

A body which sinks in water has its density:
A. Less than that of water.
B. Larger than that of water.
C. Equal to that of water.
D. Less or equal to that of water.

A piece of metal of volume 0.24 cm3 and mass 0.72 g has a relative density (R.D.) of:
A. 3.0 g/cm3.
B. 3.0.
C. 3.0 kg/m3.
D. 0.3.

Archimedes’ Principle states that:
A. The upthrust experienced by a body when partially or totally
immersed in a fluid is equal to the weight of the fluid displaced.
B. Upthrust is equal to apparent loss in weight when a body is
partially or totally immersed in a fluid.
C. When a body is totally or partially immersed in a fluid it displaces its own weight of the fluid in which it is immersed.
D. When a body is partially or totally immersed in a fluid, it experiences a big loss in weight.

The SI unit of density is
A. kg/m3.
B. kg/m2.
C. g/m3.
D. g/m2.