Question

A loaded test tube placed in pure milk sinks to a certain mark. Now if you add some water to the milk, will the test tube sink more or less? Why?​

Answer 1

Answer:

The test tube will sink more.

Explanation:

According to Archimedes' principle, Buoyancy force is given F  

B  =Vρg

where, V= volume of immersed object,

           ρ = density of fluid and  

           g = acceleration due to gravity

As density of milk is higher than the density of water. When some water is mixed with milk, then mixture will have lesser density than pure milk. Hence it will exert less amount of buoyant force. Consequently test tube will sink more.