A) \[6,{{000}^{o}}\]Celsius
B) \[5,{{000}^{o}}\]Celsius
C) \[4,{{000}^{o}}\]Celsius
D) None of these
Correct Answer: A
Solution :
These measurements confirm geophysical models that say that the temperature difference between the solid core and the mantle above must be at least \[1,{{500}^{o}}C\] to explain why the earth has a magnetic field. The research team, which was led by Agnes Dewaele from the CEA, a French technological research organisation, used X-rays from the European Synchrotron Radiation Facility (ESRF) in Grenoble, France, as a key investigating tool.
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