Density of a substance at 00C is 10.0gm/cc at 1000C is 9.4 gm/cc. The coefficient of linear expansion of solid is

γ=d1-d2d2(∆t)=10.0-9.49.4×100=0.6940=0.694×10-1=6.3×10-4 /0C But α=γ3=6.3×10-43=2.1×10-4 /0C

Density of a substance at 00C is 10.0gm/cc at 1000C is 9.4 gm/cc. The coefficient of linear expansion of solid is

γ=d1-d2d2(∆t)=10.0-9.49.4×100=0.6940=0.694×10-1=6.3×10-4 /0C But α=γ3=6.3×10-43=2.1×10-4 /0C

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Density of a substance at 0⁰C is 10.0gm/cc at 100⁰C is 9.4 gm/cc. The coefficient of linear expansion of solid is

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$6 \times 10^{- 4} /^{0} C$

$4 \times 10^{- 4} /^{0} C$

$2.1 \times 10^{- 4} /^{0} C$

$3.1 \times 10^{- 4} /^{0} C$

answer is C.

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$γ = \frac{d_{1} - d_{2}}{d_{2} (∆ t)} = \frac{10.0 - 9.4}{9.4 \times 100} = \frac{0.6}{940} = \frac{0.6}{94} \times 10^{- 1} = 6.3 \times 10^{- 4} /^{0} C$

But $α = \frac{γ}{3} = \frac{6.3 \times 10^{- 4}}{3} = 2.1 \times 10^{- 4} /^{0} C$

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Density of a substance at 00C is 10.0gm/cc at 1000C is 9.4 gm/cc. The coefficient of linear expansion of solid is

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Density of a substance at 0⁰C is 10.0gm/cc at 100⁰C is 9.4 gm/cc. The coefficient of linear expansion of solid is