A piece of aluminium and germanium each are cooled from
T1K to T2K. The resistance of
(1) each of them decreases
(2) each of them increases
(3) aluminium increases and that of germanium decreases
(4) aluminium decreases and that of germanium increases
T1K to T2K. The resistance of
(1) each of them decreases
(2) each of them increases
(3) aluminium increases and that of germanium decreases
(4) aluminium decreases and that of germanium increases
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Answer:
the correct answer is 3