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List of top Physics Questions asked in AIIMS
A
12
H
P
12\, HP
12
H
P
motor has to be operated
8
h
/
8\, h /
8
h
/
day. How much will it cost at the rate of
50
50
50
paise/kWh in 10 days?
AIIMS - 2010
AIIMS
Physics
Power
A body of mass
m
m
m
rises to a height
h
=
R
5
h=\frac{R}{5}
h
=
5
R
from the earth's surface where
R
R
R
is earth's radius. If
g
g
g
is acceleration due to gravity at the earth's surface, the increase in potential energy will be
AIIMS - 2010
AIIMS
Physics
Gravitational Potential Energy
When an ideal monoatomic gas is heated at consant pressure, fraction of heat energy supplied which increases the internal energy of gas, is
AIIMS - 2010
AIIMS
Physics
specific heat capacity
The ratio of the dimensions of Plancks constant and that of the moment of inertia is the dimensions of
AIIMS - 2010
AIIMS
Physics
Dimensional Analysis
A network of four capacitors of capacities equal to
C
1
=
C
,
C
2
=
2
C
,
C
3
=
3
C
C_{1}=C, C_{2}=2 C, C_{3}=3 C
C
1
=
C
,
C
2
=
2
C
,
C
3
=
3
C
and
C
4
=
4
C
C_{4}=4 C
C
4
=
4
C
are connected to a battery as shown in the figure.
The ratio of the charges on
C
2
C_{2}
C
2
and
C
4
C_{4}
C
4
is
AIIMS - 2010
AIIMS
Physics
Combination of capacitors
Application of a forward bias to a
p
−
n
p-n
p
−
n
junction
AIIMS - 2010
AIIMS
Physics
P-N Junction
The work functions for metals
A
,
B
A, B
A
,
B
and
C
C
C
are respectively
1.92
e
V
,
2.0
e
V
1.92\, eV,\, 2.0\, eV
1.92
e
V
,
2.0
e
V
and
5
e
V
5\, eV
5
e
V
. According to Einstein's equation, the metal(s) which will emit photoelectrons for a radiation of wavelength
4100
?
4100\,?
4100
?
is/are
AIIMS - 2010
AIIMS
Physics
Photoelectric Effect
A force
F
F
F
is applied on the wire of radius
r
r
r
and length
L
L
L
and change in the length of wire is
l
l
l
. If the same force
F
F
F
is applied on the wire of the same material and radius
2
r
2\, r
2
r
and length
2
L
2\, L
2
L
, then the change in length of the other wire is
AIIMS - 2010
AIIMS
Physics
elastic moduli
A
1
k
g
1\, kg
1
k
g
stone at the end of
1
m
1\, m
1
m
long string is whirled in a vertical circle at constant speed of
4
m
/
s
4\, m / s
4
m
/
s
. The tension in the string is
6
N
6\, N
6
N
, when the stone at
(
g
=
10
m
/
s
2
)
\left(g=10\, m / s ^{2}\right)
(
g
=
10
m
/
s
2
)
AIIMS - 2010
AIIMS
Physics
tension
The core of any transformer is laminated so as to
AIIMS - 2010
AIIMS
Physics
Alternating current
The ratio of the dimensions of Plancks constant and that of the moment of inertia is the dimension of
AIIMS - 2010
AIIMS
Physics
Dimensional Analysis
Which out of following, cannot produce two coherent sources?
AIIMS - 2009
AIIMS
Physics
Wave optics
In an experiment of Wheatstone bridge, a null point is obtained at the centre of the bridge wire. When a resistance of
10
Ω
10 \, \Omega
10
Ω
is connected in one gap, the value of resistance in other gap is
AIIMS - 2009
AIIMS
Physics
Resistance
Electric potential of earth is taken zero. No electric field exists on earth surface.
AIIMS - 2009
AIIMS
Physics
electrostatic potential and capacitance
A radioactive nucleus is being produced at a constant rate
α
\alpha
α
per second. Its decay constant is
λ
\lambda
λ
. If
N
0
N_0
N
0
are the number of nuclei at time t = 0, then the maximum number of nuclei possible are
AIIMS - 2009
AIIMS
Physics
Nuclei
A conducting rod of length
l
l
l
and mass
m
m
m
is moving down a smooth inclined plane of inclination
θ
\theta
θ
with constant velocity
v
v
v
. A current
i
i
i
is flowing in the conductor in a direction perpendicular to paper inwards. A vertically upwards magnetic field
B
⃗
\vec{ B }
B
exists in space. Then magnitude of magnetic field
B
⃗
\vec{ B }
B
is
AIIMS - 2009
AIIMS
Physics
Current electricity
The bob of a simple pendulum is a ball full of water, if a fine hole is made in the bottom of the ball, the time period first increases and then decreases. As water flows out of the bob the weight of bob decreases.
AIIMS - 2009
AIIMS
Physics
Oscillations
Four charges are arranged at the corners of a square as shown in the figure. The direction of electric field at the centre of the square is along
AIIMS - 2009
AIIMS
Physics
Electric charges and fields
What is the energy stored in the capacitor between terminals a and b of the network shown in the figure? (Capacitance of each capacitor C = 1 ??)
AIIMS - 2009
AIIMS
Physics
electrostatic potential and capacitance
Neglecting the density of air, the terminal velocity obtained by a raindrop of radius
0.3
m
m
0.3\, mm
0.3
mm
falling through air of viscosity
1.8
×
1
0
−
5
N
s
m
−
2
1.8 \times 10^{-5}\, N \,s \,m ^{-2}
1.8
×
1
0
−
5
N
s
m
−
2
will be
AIIMS - 2009
AIIMS
Physics
mechanical properties of fluid
When a current is passed in a conductor, 3
∘
^{\circ}
∘
C rise in temperature is observed. If the strength of current is made thrice, then rise in temperature will approximately be
AIIMS - 2009
AIIMS
Physics
Electric Power
What is ratio of Bohr magneton to the nuclear magneton?
AIIMS - 2009
AIIMS
Physics
Atoms
Three equal weights of
3
k
g
3\, kg
3
k
g
each are hanging on a string passing over a frictionless pulley as shown in figure. The tension in the string between masses II and III will be (Take
g
=
10
m
/
s
e
c
2
g=10 \,m / sec ^{2}
g
=
10
m
/
se
c
2
)
AIIMS - 2009
AIIMS
Physics
tension
The ratio of intensities between two coherent sound sources is
4
:
1
4 : 1
4
:
1
. The difference of loudness in decibels between maximum and minimum intensities, when they interfere in space, is
AIIMS - 2009
AIIMS
Physics
Youngs double slit experiment
The dimensions of specific resistance are
AIIMS - 2009
AIIMS
Physics
Dimensional Analysis
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