Question

what happens when a ship enters a Sea from a river ?
A. It rises
B. It remains at the same level
C. sinks a little
D. None of the above

Answer 1

what happens when a ship enters a Sea from a river ?
A. It rises✔️✔️
B. It remains at the same level
C. sinks a little
D. None of the above

Answer 2

Answer:

Correct answer is option (A) It rises.

Explanation:

When a ship travelling in a river enters a sea, it means that it is actually entering from a water body of less density (fresh water with little or no salt whose density is 1g/cm^3 approximately) into a water body of more density (saline water with density > 1g/cm^3).

We know that, density is defined as the mass of body per unit volume.

An object floats on water when it has weight less than the weight of equal volume of water.

It sinks when the weight of the object is more than the weight of equal volume of water.

When the ship enters a sea from a river, the mass of water it displaced in river is less than the mass of water in sea.

So, the ship rises up a little.