Two different bodies are completely immersed in water and undergo the same loss in weight. Is it necessary that their weights in air should also be the same? Justify your answer.
No, it is not necessary that their weights in air should . also be the same. This is because the two bodies have undergone the same toss in weight on completely immersing in water due to their equal volumes, not due to their equal weights. So, they may have different weights in air.