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There are two spheres of same radius and material at same temperature, but one being solid while the other is hollow. They are heated to the same temperature. Then

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Both expand equal

Hollow sphere expands more

Solid sphere expands more

Depends on other factors

answer is C.

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Detailed Solution

Thermal expansion is similar to photographic enlargement.

$ΔV = Vγ (Δθ)$

$V, γ and Δθ$ are same for both $\Rightarrow ΔV$ is same.

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