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Electronic Devices question

2003 · Shift 0 · Q142
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Electronic Devices question

2003 · Shift 0 · Q142

JEE MainPhysicsElectronic DevicesMCQ+4 / −1
A strip of copper and another of germanium are cooled from room temperature to 80K.80K.80K. The resistance of
  1. A
    each of these decreases
  2. B
    copper strip increases and that of germanium decreases
  3. C
    copper strip decreases and that of germanium increases
  4. D
    each of these increases
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