MEDIUM
9th Manipur Board
IMPORTANT
Earn 100

In which direction does the buoyant force on an object immersed in a liquid act? State the magnitude of the buoyant force.

Important Questions on Floatation

EASY
9th Manipur Board
IMPORTANT
You have a bagful of cotton and iron of the same mass, say 50 kg, when measured using a weighing machine. In reality, one is of heavier mass than the other. Can you say which one is heavier? Explain why.
HARD
9th Manipur Board
IMPORTANT
Why does a block of plastic or cork come up to the surface of the water when they are released underwater?
HARD
9th Manipur Board
IMPORTANT
The volume of a solid block of mass 180 gm is 100 cm3. If the block is placed in the water of density 1 gm cm-3, will it float or sink? Explain.
HARD
9th Manipur Board
IMPORTANT
A lump of plastic of relative density 0.4 has a mass of 10 gm. It is placed in water. Calculate the volume of the lump projecting above the surface of the water.