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A piece of copper and another of Ge are cooled from room temp. to 80 K. The resistance of - (a) Each of them increases (b) Cu increases and that of Ge decrease (c) Cu decrease and that of Ge increases (d) Each of them decreases

A piece of copper and another of Ge are cooled from room temp. to 80 K. The resistance of -

(a) Each of them increases
(b) Cu increases and that of Ge decrease
(c) Cu decrease and that of Ge increases
(d) Each of them decreases

Grade:12

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