1.

The minimum weight of H_(2) filled in a balloon of weight w_(1) kg to just lift it from the ground is w_(2) kg. If w_(3) kg of H_(2) is filled into this balloon, the payload of the balloon will be (the volume of the balloon is supposed to be same with w_(2) or w_(3) kg of H_(2))

Answer»

`w_(2)-w_(3)`
`(w_(2)-w_(3)-w_(1))`
`(w_(3)-w_(2))`
`(w_(3)-w_(2)-w_(1))`

ANSWER :A


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