Two solid copper spheres, having different radii, undergo the same temperature change. A student states that the change in internal energy of the two objects would be the same. Briefly discuss this statement.
Internal energy is the stored energy and is not apparently shown by any system. The energy is possessed by the system due to its molecular constitution and the position of atoms/molecules. In the above query, though the sizes are different the change in temperature is uniform and the change in energy at atomic/molecular level is same and hence the change in internal energy would be same. This is because the atomic structure is same in both cases.
So effect of temperature is same in both cases.
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