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A piece of copper and another of germani...

A piece of copper and another of germanium are cooled from room temperature to `80 K`. The resistance of

A

each of them increases

B

each of them decreases

C

copper increases and germanium decreases

D

copper decreases and germanium increases

Text Solution

Verified by Experts

The correct Answer is:
D
Copper is metal and germanium is semiconduction Resistance of a metal decreases and that of a semiconductor increases with decrease in temperature
`:.` correct option is d.
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