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1
AIEEE 2003
MCQ (Single Correct Answer)
+4
-1
A strip of copper and another of germanium are cooled from room temperature to $$80K.$$ The resistance of
A
each of these decreases
B
copper strip increases and that of germanium decreases
C
copper strip decreases and that of germanium increases
D
each of these increases
2
AIEEE 2002
MCQ (Single Correct Answer)
+4
-1
Change Language
By increasing the temperature, the specific resistance of a conductor and a semiconductor
A
increases for both
B
decreases for both
C
increases, decreases
D
decreases, increases
3
AIEEE 2002
MCQ (Single Correct Answer)
+4
-1
Change Language
At absolute zero, Si acts as
A
non-metal
B
metal
C
insulator
D
none of these
4
AIEEE 2002
MCQ (Single Correct Answer)
+4
-1
Change Language
The energy band gap is maximum in
A
metals
B
superconductors
C
insulator
D
semiconductor

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