Answer :

Here, instead of considering a volume for copper, we consider a volume for cavities(v). All of weight is due to gold. There volume of gold,

The total volume, —————(1)


Weight of the water displaced, —————(2)


The ornament weighs 34 g in water.


Therefore, the buoyant force, —————(3)


This buoyant force is equal to weight of the water displaced. Therefore, Equating (2) and (3)




(ANS)


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