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Question

In a superconductor the value of critical density depends upon

A
magnetic field strength
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B
temperature
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C
either A or B
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D
Both A and B
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Solution

The correct option is D Both A and B
Superconductivity is characterize, both by perfect conductivity and by the expulsion of magnetic field (Meissner effect.)
Change in either magnetic field strength or temperature can change the superconductivity to normal matter.


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