A piece of metal floats on mercury. The coeff.of volume expansion of metal & Hg are¥1 & ¥2 resp. If the temp. Of both Hg & metal are inreased by delta T, then by what factor does the fraction of the volume of the metal submerged in Hg changes?[ans.....(¥2-¥1)deltaT] pls tel the idea......

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AKASH GOYAL

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Excuse me....I have the same question in my physics module/sheet of class 11 resonance institute Kota. But they have given answer-[1+(¥2)(delta T)]÷[(1+(¥1)(delta T)]