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Area and Volume Expansion

The density o...

Question

The density of a substance at $0^{o} C$ is 10 g/cc and at $100^{o} C$ , its density is 9.7 g/cc. The coefficient of volume expansion of the substance is

2 \times 10^{- 2}

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3 \times 10^{- 4}

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4 \times 10^{- 6}

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6 \times 10^{- 3}

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Solution

The correct option is A $3 \times 10^{- 4}$
Coefficient of volume expansion $γ = \frac{Δ p}{p Δ T} = \frac{p_{1} - p_{2}}{p (Δ θ)}$ $= \frac{10 - 9.7}{10 \times (100 - 0)} = 3 \times 10^{- 4}$

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