A) volume
B) area
C) diameter
D) same in all
Correct Answer: A
Solution :
We know that, Volume of sphere \[=\frac{4}{3}\pi {{r}^{3}}\] where r is radius. When sphere is heated its volume will increase in cube. Also surface area of a sphere \[=4\pi {{r}^{2}}\] On heating the sphere, surface area value will increase in square. Diameter =2r Diameter will increase as per r. Hence, we observe that maximum increase takes place in volume of the sphere.
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