Consider two spheres A and B of the same size and material. The sphere A is hollow and the sphere B is solid. Which of the following statements hold good if both the spheres are heated to the same temperature?
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a
A expands more than B.
b
A expands less than B.
c
Both the spheres expand equally.
d
Data is insufficient.
answer is C.
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Detailed Solution
A cavity in a material expands in exactly the same way as if the cavity were filled with material. Thus, both spheres will expand by the same amount.