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Question

Two spheres of same size are made of the same metal, but one is hollow and the other one is solid. They are heated to the same temperature, then

A
Hollow sphere will expand more than the solid one.
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B
Solid sphere will expand more than the hollow one.
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C
Both the spheres will expand equally.
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D
None of these
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Solution

The correct option is C Both the spheres will expand equally.
Here, we know that both the bodies are made up of same material, hence its orientation will not affect its expansion.
Hence,ΔVsolidVsolid=ΔVhollowVhollow=γΔT
Therefore, we can say both the spheres will expand equally because material used for making both of them were same.

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