1
NDA 2016 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
If the image of an object formed by a concave mirror is virtual, erect and magnified, then the object is placed
A
at the principal focus
B
at the centre of curvature
C
beyond the centre of curvature
D
between the pole of the mirror and the principal focus
2
NDA 2016 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
When three resistors, each having resistance r, are connected in parallel, their resultant resistance is x. If these three resistances are connected in series, then total resistance will be
A
3x
B
3rx
C
9x
D
$${3 \over x}$$
3
NDA 2016 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
The property of electric current which is applicable in the fuse wire is
A
chemical effect of current
B
magnetic effect of current
C
heating effect of current
D
optical property of current
4
NDA 2016 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
Along a streamline flow of fluid,
A
the velocity of all fluid particles at a given instant is constant
B
the peed of a fluid particle remains constant
C
the velocity of all fluid particles crossing a given position is constant
D
the velocity of a fluid particle remains constant
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