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Two pieces one of germinium and the othe...

Two pieces one of germinium and the other of aluminium are cooled from `T_(1) K` to `T_(2) K`. The resistance of

A

aluminium increases and that of gertmanium decreases

B

each of them decreases

C

aluminium decreases and that of germanium increases

D

each of them increases

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The correct Answer is:
C
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