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Electronic Devices question

2004 · Shift 0 · Q125
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Electronic Devices question

2004 · Shift 0 · Q125

JEE MainPhysicsElectronic DevicesMCQ+4 / −1
A piece of copper and another of germanium are cooled from room temperature to 77K,77K,77K, the resistance of
  1. A
    copper increases and germanium decreases
  2. B
    each of them decreases
  3. C
    each of them increases
  4. D
    copper decreases and germanium increases
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