MEDIUM
Earn 100

How does a fish floats in the water?

Important Questions on Fluids

EASY
The weight of the wooden block is W. The apparent weight of the body on floating water is
MEDIUM
A solid sphere of volume V and density ρ floats at the interface of two immiscible liquids of densities ρ1 and ρ2 respectively. If ρ1<ρ<ρ2, then the ratio of volume of the parts of the sphere in upper and lower liquid is
EASY
What do you understand by buoyancy?
MEDIUM
Describe an experiment to show the existence of buoyant force.
EASY
Explain the reason due to which buoyancy arises.
EASY
In what direction does the buoyant force on an object immersed in a liquid act?
EASY
The property which determines whether an object floats or sinks in water is termed as _____.
EASY
When an object is immersed in a fluid, name the two forces acting on it.
EASY
A mug filled with water appears lighter inside the water compared to when the mug is held in the air. Why?
EASY
You have a bag of cotton and an iron bar, each indicating a mass of 100 kg when measured on a weighing machine. In reality, one is heavier than other. Can you say which one is heavier and why?
EASY
You find your mass to be 42 kg on a weighing machine. Is your mass more or less than 42 kg?
MEDIUM
What happens when we try to push an inflated balloon into a bucket of water?
EASY
Why does a block of plastic released under water come up to the surface of the water?
MEDIUM
What do you mean by buoyancy?
MEDIUM
Two cylinders of same cross-section and length L but made of two material of densities d1 and d2 are cemented together to form a cylinder of length 2L. The combination floats in a liquid of density d with a length L2 above the surface of the liquid. If d1<d2 then -
EASY
What do you mean by buoyancy?
EASY
How does buoyant force help in making objects appear lighter in fluids?
EASY
When a floating body is pressed down a little, which of the two will increase - weight or upthrust?
EASY
A wooden cylinder floats in water with half of its volume inside water. The density of wood is -
EASY
A helium filled balloon moves upwards when released. This is because