1
NEET 2013
MCQ (Single Correct Answer)
+4
-1
A uniform force of $$\left( {3\widehat i + \widehat j} \right)$$ newton acts on a particle of mass 2 kg. Hence the particle is displaced from position $$\left( {2\widehat i + \widehat k} \right)$$ metre to position $$\left( {4\widehat i + 3\widehat j - \widehat k} \right)$$ metre. The work done by the force on the particle is
A
13 J
B
15 J
C
9 J
D
6 J
2
AIPMT 2012 Mains
MCQ (Single Correct Answer)
+4
-1
A car of mass m starts from rest and accelerates so that the instantaneous power delivered to the car has a constant magnitude P0. The instantaneous velocity of this car is proportional to
A
t2P0
B
t1/2
C
t$$-$$1/2
D
$${t \over {\sqrt m }}$$
3
AIPMT 2012 Prelims
MCQ (Single Correct Answer)
+4
-1
A solid cylinder of mass 3 kg is rolling on a horizontal surface with velocity 4 m s$$-$$1. It collides with a horizontal spring of force constant 200 N m$$-$$1. The maximum compression produced in the spring will be
A
0.5 m
B
0.6 m
C
0.7 m
D
0.2 m
4
AIPMT 2012 Prelims
MCQ (Single Correct Answer)
+4
-1
The potential energy of a particle in a force field is $$U = {A \over {{r^2}}} - {B \over r}$$ where A and B are positive constants and r is the distance of particle from the centre of the field. For stable equilibrium, the distance of the particle is
A
$${B \over {2A}}$$
B
$${{2A} \over B}$$
C
$${A \over B}$$
D
$${B \over A}$$
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Medical
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Graduate Aptitude Test in Engineering
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CBSE
Class 12