Question

A stone of mass 400 g, when immersed completely

in water displaces 250 cm3 of water. The relative

density of the stone is

(1) 2.32 (2) 3.23

(3) 0.625 (4) 1.60​

Answer 1

Answer:

1.60 g/cm³

Explanation:

The relative density of the stone is =  400 g/250 cm3 = 1.60 g/cm³

Answer 2

Answer:

(4) 1.60​

Explanation:

According to the Archimedes' principle-

The upward buoyant force which is exerted on the object which is immersed in the fluid is equal to weight of fluid that is displaced by the object.

Thus, the volume of the stone = 250 cm³

Mass of the stone = 400 g

Thus, the expression for density is:

$Density=\frac {Mass}{Volume}$

Density = 400 g / 250 cm³ = 1.60 g/cm³

Option 4 is correct.