EASY
9th ICSE
IMPORTANT
Earn 100
A small block of wood is held completely immersed in (i) water, (ii) glycerine and then released. In each case, what do you observe? Explain the difference in your observation in the two cases.
Important Questions on Upthrust in Fluids, Archimedes' Principle and Floatation
MEDIUM
9th ICSE
IMPORTANT
A body held completely immersed inside a liquid experiences two forces. the force due to gravity and , the buoyant force. Draw a diagram showing the direction of these forces acting on the body and state the conditions when the body will float or sink.
EASY
9th ICSE
IMPORTANT
Prove that the loss in weight of a body when immersed wholly or partially in a liquid is equal to the buoyant force (or upthrust) and this loss is because of the difference in pressure exerted by liquid on the upper and lower surfaces of the submerged part of the body.
EASY
9th ICSE
IMPORTANT
A sphere of iron and another of wood of the same radius are held underwater. Compare the upthrust on the two spheres.
EASY
9th ICSE
IMPORTANT
A sphere of iron and another of wood, both of same radius are placed on the surface of water. State which of the two will sink ? Give reason to your answer.
EASY
9th ICSE
IMPORTANT
How does the density of material of a body determine whether it will float or sink in water?
EASY
9th ICSE
IMPORTANT
It is easier to lift a heavy stone underwater than in air. Explain.
EASY
9th ICSE
IMPORTANT
State Archimedes' principle.
EASY
9th ICSE
IMPORTANT
Describe an experiment to verify Archimedes' principle.
