A body initially floats in water. When another body is kept over it, then it sinks because :

its relative density increases

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its density decreases

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its relative density decreases

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none of the above

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Solution

The correct option is A its relative density increases
A body floats in water due to its less relative density but when another body is kept above it its relative density increases & when it cross that of water it sinks.

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{(\frac{p}{q})}^{t h}

Write true or false for each statement:

(a) Equal volumes of the two different substances have equal masses.

(b) The density of a piece of brass will change by changing its size or shape.

(d) Relative density of water is 1.0.

(e) Relative density of a substance is expressed in g $c m^{-} 3$ .

(f) When a body is immersed in a liquid, the buoyant force experienced by the body is equal to the volume of the displaced by it.

(g) A body experiences the same buoyant force while floating in water or alcohol.

(h) A body experiences the same buoyant force when it floats or sinks in water.

(i) A body floats in a liquid when its weight becomes equal to the weight of the liquid displaced by its submerged part.

(j) A body while floating sinks in a liquid of low density than in high density.

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