Two metal spheres are made of the same material and have the same diameter, but one is solid and the other is hollow. If their temperature is increased by the same amount,
A) the solid sphere becomes less dense and the hollow one denser.
B) the solid sphere becomes bigger than the hollow one.
C) the solid sphere becomes denser and the hollow one less dense.
D) the two spheres remain of equal size.
E) the hollow sphere becomes bigger than the solid one.

Question

Quizplus · Accepted Answer

When both spheres are made of the same material and have the same diameter, and their temperature is increased by the same amount, both will expand equally due to thermal expansion. The fact that one is solid and the other is hollow does not affect the amount by which their outer dimensions increase, as expansion depends on the material's properties and the temperature change, not on the object's mass or whether it is solid or hollow.

Two Metal Spheres Are Made of the Same Material and Have