A piece of copper and the other of germanium are cooled from the room temperature to $80 K$, then which of the following would be a correct statement
  • A
    Resistance of each increases
  • B
    Resistance of each decreases
  • C
    Resistance of copper increases while that of germanium decreases
  • D
    Resistance of copper decreases while that of germanium increases
[IIT-JEE 1988; Bihar CEE 1992; CBSE PMT 1993; MP PET 1997; RPET 1999; AIEEE 2004]
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