Question

A piece of copper and another of germanium are cooled from room temperature to 80 K. The resistance of
1. Each of them increases
2. Each of them decreases
3. Copper increases and that of germanium decreases
4. Copper decreases and that of germanium increases

Answer 1

2. Each of them decreases

since, temperature is directly proportional to resistance

Answer 2

4th is the correct option