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Choose the wrong statements from the following. Two spheres made of the same material have the same diameter. One sphere is hollow and the other is solid. If they are heated through the same range of temperature, Then: This question has multiple correct options

1. Both spheres will expand equally.
2. Hollow sphere will expand more than solid one
3. solid sphere will expand more than hollow one
4. Solid sphere will expand three times that of hollow sphere

Correct answer: Hollow sphere will expand more than solid one

Solution

The correct statement is that both spheres expand equally in terms of outer dimensions, because linear and volumetric expansion depend on the material and initial size, not on whether the interior is hollow. So the claim that the hollow sphere expands more is wrong, and the others are also not supported by thermal expansion laws.

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