Question
A solid whose volume does not change with temperature floats in a liquid. For two different temperatures t₁ and t₂ of the liquid, fractions f₁ and f₂ of the volume of the solid remain submerged in the liquid. The coefficient of volume expansion of the liquid is equal to
Options :
f₁-f₂/f₂t₁-f₁t₂
f₁-f₂/f₁t₁-f₂t₂
f₁+f₂/f₂t₁-f₁t₂
f₁+f₂/f₁t₁+f₂t₂
Answer :
f₁-f₂/f₂t₁-f₁t₂
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