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Q.

Is it true that a 1/2 kg sheet of tin sinks in water but if the same sheet is converted into a box, it floats?


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a

True

b

False 

answer is A.

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Detailed Solution

The above statement is true.
A 1/2 kg sheet of tin sinks in water because the density of tin is higher than that of water.
When a similar sheet of tin is changed over into a box, then, at that point, because of the catching of parcel of 'light' air in the box, the average density of the box made of the tin sheet becomes lower than that of water. Subsequently, the buoyant force exerted by the water becomes more than the weight of the box, resulting in the floating of the box.
Therefore, if the same sheet is converted into a box or boat made of tin sheet floats in water.
 
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