1) A piece of copper and a piece of germanium are cooled from room temperature to 80K, Then, which one of the following is correct? A) Resistance of each will increase B) Resistance of each will decrease C) Resistance of copper will decrease while that of germanium will increase D) Resistance of copper will increase while that of germanium will decrease Answer: Option CExplanation: Copper is a conductor and germanium is a semiconductor. when both are cooled from room temperature to 80 k. Then, the resistance of copper will decrease while that of germanium will increase.
