1
AIEEE 2003
MCQ (Single Correct Answer)
+4
-1
To get three images of a single object, one should have two plane mirrors at an angle of
A
$${60^ \circ }$$
B
$${90^ \circ }$$
C
$${120^ \circ }$$
D
$${30^ \circ }$$
2
AIEEE 2003
MCQ (Single Correct Answer)
+4
-1
The image formed by an objective of a compound microscope is
A
virtual and diminished
B
real an diminished
C
real and enlarged
D
virtual and enlarged
3
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
4
AIEEE 2003
MCQ (Single Correct Answer)
+4
-1
The difference in the variation of resistance with temperature in a metal and a semiconductor arises essentially due to the difference in the
A
crystal structure
B
variation of the number of charge carries with temperature
C
type of bonding
D
variation of scattering mechanism with temperature
JEE Main Papers
2023
2021
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