A cube of side 5 cm is completely immersed first in water and then in a saturated salt solution. In which case will it experience a greater buoyant force?

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Water

Saturated salt solution

It will experience the same buoyant force in both water and saturated solution.

It will not experience any buoyant force in both water and saturated solution.

answer is B.

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Detailed Solution

According to Archimedes’ principle, when a body is immersed fully or partially in a liquid, it experiences an upward force that is equal to the weight of the liquid displaced by it.
The upward force exerted by the liquid on the body is known as upthrust or buoyant force.
Since buoyant force is equal to the weight of the displaced liquid, it is proportional to the density of the liquid.
Since a saturated salt solution is denser than water, the cube will experience a greater buoyant force in a saturated salt solution.

Therefore, 'Saturated salt solution' is the correct response.