16 Questions
What is the upward force exerted by a liquid on an object immersed in it called?
Buoyant force
When FB > W, what will happen to a body in a fluid?
It will float with a part submerged
What is the condition for a body to completely float in a fluid?
FB = W
What happens if the upthrust is less than the weight of a body immersed in a fluid?
The body will sink
Where does the upthrust act on the body immersed in fluid?
Upwards at the centre of gravity of the displaced fluid
What characteristic property affects the upthrust exerted by a fluid on a submerged body?
Volume of the body submerged in fluid
According to Archimedes’ principle, when an object is immersed wholly or partially in a fluid, it experiences an upthrust which is equal to the:
Weight of the fluid displaced by it
In the context of Archimedes’ principle, which statement about gases is true?
Gases exert a negligible buoyant force on objects.
In Experiment 1 for verifying Archimedes’ principle, what conclusion can be drawn when the solid cylinder A loses weight after being immersed in water?
The buoyant force acting on cylinder A is equal to the weight of water displaced by it.
What is the SI unit of density?
kg m−3
Which quantity is represented by the Greek letter ρ?
Density
What happens to the density of a substance with an increase in temperature?
It decreases
What is the relative density of a substance defined as?
Mass per unit volume
What does the pressure at a point in a liquid do?
Decreases with increase in depth
What force is created on a block immersed in liquid due to pressure difference between the lower and upper faces?
Net upward force
What does Archimedes’ principle state about the buoyant force acting on an object?
It is equal to the weight of the fluid displaced by the object.
Test your knowledge of buoyancy, upthrust, Archimedes' principle, and the conditions for a body to sink or float in fluids with this quiz. Explore the concepts of forces exerted by liquids on immersed objects and the principles governing floatation.
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