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Question

An object of weight W and density ρ is dipped in a fluid of density ρ1. Its apparent weight will be


A

W(ρρ1)

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B

W(1ρ1ρ)

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C

(ρρ1W)

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D

W(ρ1ρ)

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Solution

The correct option is B

W(1ρ1ρ)


Let V be the volume of the body.
So, W=ρVg
Now, buoyant force, B=ρ1Vg
Apparent weight =WB=(ρρ1)Vg=(1ρ1ρ)W


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