Therefore the volume of the stone is 5ml and the density is 4mg/ml.
What is Displacement Method ?
The displacement method can be used to accurately measure the volume of the human body and other oddly shaped objects by measuring the volume of fluid displaced when the object is submerged.
It is given in the question that the initial volume of the water in the graduated cylinder is 20 mL.
When the stone was dropped in the cylinder, the water level rose to 25 mL.
The volume of the stone has to be calculated using the displacement method.
The volume displaced by the stone is 25-20 ml
= 5 ml
Therefore the volume of the stone is 5ml.
The density of any substance can be calculated by dividing its mass with its volume.
Mass given is 20g and the volume of the stone is 5ml
Therefore density = 20/5 = 4 gm/ml
Therefore Option A is the correct answer.
To know more about Displacement Method
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