Question

Two sphere A and B are made of the same material and have the same radius. Sphere A is hollow and sphere B is solid. Both the sphere are heated to the same temperature. Which of the following is correct?

• A. A expands more than B.
• B. A expand less than B.
• C. Both the spheres expand equally.
• D. Data is insufficient.

Answer 1

The correct option is C Both the spheres expand equally.

A cavity in a material expand in exactly the same way as if the cavity were filled with material. Thus ,both spheres will expand by the same amount.