Target Exam

CUET

Subject

Physics

Chapter

Semiconductors and Electronic Devices

Question:

A piece of copper and another of germanium are cooled from room temperature to 100 K. The resistance of:

Options:

copper increases and germanium decreases

copper decreases and germanium increases

each of them increases

each of them decreases

Correct Answer:

copper decreases and germanium increases

Explanation:

The correct answer is Option (2) → copper decreases and germanium increases

When copper and germanium are cooled -

  • Copper's Resistance decreases.
  • Germanium's Resistance increases.