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Thermal Expansion

The unit for ...

Question

The unit for the coefficient of thermal expansion is

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c m /^{\circ} C

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c m^{\circ} C

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^{\circ} C^{- 1}

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Solution

The correct option is D $^{\circ} C^{- 1}$
$Δ L = L α Δ T$
so dimension of $α$ are decided by 1/T

Hence D is correct

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