1.

1KG cottan and 1KG iron which has more mass​

Answer»

Answer:

Upthrust will be more for the COTTON as it will have a LARGER surface area per UNIT of APPARENT weight due to the lower density. So every 1 kg apparent weight is SOMEWHERE near 1.1 kg actual weight of cotton. And 1kg Iron actually weighs near 1.09 Kg. Therefore, Cotton is heavier!



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