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

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Both the spheres will expand equally

The hollow sphere will expand more than the solid one

No conclusion can be drawn about their relative expansions unless the nature of the material is known.

The solid sphere will expand more than the hollow one

answer is A.

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Detailed Solution

Thermal expansion depends on shape and dimensions of configuration of given material.

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