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Apiece of copper and another of germaniu...

Apiece of copper and another of germanium are cooler from room teperature to `77K`, the resistence of

A

copper increase and germanium decrease

B

each of them decraeses

C

each of them incraeses

D

copper decrease and germanium increase

Text Solution

Verified by Experts

The correct Answer is:
D
Copper is a its resistence decreases on decreasing temperature is thermal agitation decrease on whereas germanium is semiconductor therefore on decreasing tempetature resistance increases
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