In the scenario you described, where a potato strip is placed in a concentrated solution of salts, osmosis is the primary process that takes place.
Osmosis is the movement of water molecules from an area of lower solute concentration (lower salt concentration in this case) to an area of higher solute concentration (higher salt concentration). It occurs across a semi-permeable membrane, which allows the passage of water molecules but restricts the passage of solute particles (such as salts in this case).
When the potato strip is placed in the concentrated salt solution, the water inside the potato cells will tend to move out of the cells and into the surrounding solution due to the higher salt concentration outside the cells. This can result in the potato strip losing water and becoming dehydrated or even shrinking in size, depending on the relative concentration gradient between the potato cells and the salt solution.
I hope this helped!
~~~Harsha~~~