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Physics Thermodynamics Thermal Expansion Single Correct MCQ
Published on: September 12, 2026

The radius of metal sphere at temperature is . If the sphere is heated by a little temperature , then the increase in volume of sphere (if is its coefficient of linear expansion) will be

A
B

C
D

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The correct answer is:
D

The volume of a sphere is given by

From Eqs. (i) and (ii), we get

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