Define thermal expansion for alpha, beta and gamma?

α : β : γ :: 1 : 3 : 2

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α : β : γ :: 3 : 2 : 1

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α : β : γ :: 2 : 3 : 1

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α : β : γ :: 1 : 2 : 3

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Solution

The correct option is D $α : β : γ :: 1 : 2 : 3$
Co-efficients of linear $(α)$ , areal $(β)$ and volumetric $(γ)$ thermal expansions are related as:-
$α : β : γ = 1 : 2 : 3$

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