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A metal sheet having size of $0.6 \times 0.5 m^{2}$ is heated from 293 K to $520^{0} C$ . The final area of the hot sheet is $[α = 2 \times 10^{- 5} /^{0} C]$

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$0.306 m^{2}$

$0.0306 m^{2}$

$3.06 m^{2}$

$1.02 m^{2}$

answer is A.

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Detailed Solution

$A_{2} = A_{1} (1 + β Δ t) β = 2 α$

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