Question
Question: Two spheres A and B are made of the same material and have the same radius. Sphere A is hollow and s...
Two spheres 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 spheres are heated to the same temperature. Which of the following is correct?
A
(a) A expands more than B.
A
(b) A expands less than B.
A
(c) Both the spheres expand equally.
A
(d) Data is insufficient.
Explanation
Solution
(c) A cavity in a material expands in exactly the same way as if the cavity were filled with material. Thus, both spheres will expands by the same amount.