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Physics
List of top Physics Questions asked in AIIMS
When white light passes through a prism, the deviation is maximum for
AIIMS - 2008
AIIMS
Physics
Ray optics and optical instruments
Two heater wires, made of the same material and having the same length and the same radius, are first connected in series and then in parallel to a constant potential difference. If the rates of heat produced in the two cases are
$H_s$
and
$H_p$
respectively, then
$H_s /H_p$
will be
AIIMS - 2008
AIIMS
Physics
Electric Power
Three point charges
$+q,-2 q$
and
$+q$
are placed at points
$(x=0, y=a, z=0),(x=0, y=0, z=0)$
and
$(x=a, y=0, z=0)$
, respectively. The magnitude and direction of the electric dipole moment vector of this charge assembly are
AIIMS - 2008
AIIMS
Physics
Electric Dipole
The magnifying power of a compound microscope increase with
AIIMS - 2008
AIIMS
Physics
Optical Instruments
When the velocity of projection of a body is made
$n$
times, its time of flight becomes
$n$
times. Range of projectile does not depend on the initial velocity of a body.
AIIMS - 2008
AIIMS
Physics
Motion in a plane
The magnetic field produced by a current carrying solenoid is independent of its length and cross-sectional area. The magnetic field inside the solenoid is uniform.
AIIMS - 2008
AIIMS
Physics
Magnetic Field
The colour of the green flower seen through red glass appears to be dark. Red glass transmits only red light.
AIIMS - 2008
AIIMS
Physics
Ray optics and optical instruments
: The alternating current lags behind the e.m.f. by a phase angle of
$\pi / 2$
, when AC flows through an inductor. : The inductive reactance increases as the frequency of
$A C$
source decreases.
AIIMS - 2008
AIIMS
Physics
Alternating current
An electric motor will have maximum efficiency when back emf becomes equal to half of applied emf. Efficiency of electric motor depends only on magnitude of back emf.
AIIMS - 2008
AIIMS
Physics
cells
An object
$5\, cm$
tall is placed
$1\, m$
from a concave spherical mirror which has a radius of curvature of
$20 \,cm$
. The size of the image is
AIIMS - 2008
AIIMS
Physics
Ray optics and optical instruments
A particle of mass
$m$
moves with constant speed along a circular path of radius
$r$
under the action of force
$F .$
Its speed is
AIIMS - 2008
AIIMS
Physics
Motion in a plane
A converging lens forms a real image
$I$
of an object on its principal axis. A rectangular slab of refractive index
$\mu$
and thickness
$x$
is introduced between
$I$
and the lens,
$I$
will move
AIIMS - 2008
AIIMS
Physics
Ray optics and optical instruments
A coin is placed on a horizontal platform which undergoes vertical simple harmonic motion of angular frequency
$ \omega $
. The amplitude of oscillation is gradually increased. The coin will leave contact with the platform for the first time
AIIMS - 2008
AIIMS
Physics
Acceleration
A car, starting from rest, accelerates at the rate
$f$
through a distance
$S$
, then continues at constant speed for time
$t$
and then decelerates as the rate
$f / 2$
to come to rest. If the total distance travelled is
$15 S$
, then
AIIMS - 2008
AIIMS
Physics
Motion in a straight line
A parachutist after bailing out falls
$50\, m$
without friction. When parachute opens, it decelearates at
$ 2\,m/s^{2} $
. He reaches the ground with a speed of
$3 \,m/s$
. At what height, did he bail out?
AIIMS - 2008
AIIMS
Physics
Motion in a straight line
A particle of mass
$10\, g$
is kept on the surface of a uniform sphere of mass
$100\, kg$
and radius
$10 \,cm$
. Find the work to be done against the gravitational force between them, to take the particle far away from the sphere (you may take
$G=6.67 \times 10^{-11} Nm ^{2} / kg ^{2}$
)
AIIMS - 2008
AIIMS
Physics
Gravitational Potential Energy
A smooth block is released at rest on a
$45^{\circ}$
incline and then slides a distance
$d$
. The time taken to slide is
$n$
times as much to slide on rough incline than on a smooth incline. The coefficient of friction is
AIIMS - 2008
AIIMS
Physics
Friction
Starting with a sample of pure
${ }^{66} Cu , 7 / 8$
of it decays into
$Zn$
in
$15 \,min$
. The corresponding half-life is
AIIMS - 2008
AIIMS
Physics
Half life
A hollow cylinder has a charge
$q\,\, C$
within it. If
$ \Phi $
is the electric flux in unit of voltmeter associated with the curved surface
$B$
, the flux linked with the plane surface
$A$
in unit of voltmeter will be
AIIMS - 2008
AIIMS
Physics
Gauss Law
A wheel has angular acceleration of
$ 3.0\,rad/s^{2} $
and an initial angular speed of
$2.00 \,rad/s$
. In a time of
$2 \,s$
it has rotated through an angle (in radian) of
AIIMS - 2008
AIIMS
Physics
rotational motion
If in a p-n junction diode, a square input signal of
$10 \,V$
is applied as shown
Then the output signal across
$ R_L$
will De
AIIMS - 2008
AIIMS
Physics
Transistors
For the given uniform square lamina
$ABCD$
, whose centre is
$O$
AIIMS - 2008
AIIMS
Physics
Moment Of Inertia
A bullet is fired from a rifle and the rifle recoils. Kinetic energy of rifle is
AIIMS - 2008
AIIMS
Physics
work, energy and power
The phase difference between the instantaneous velocity and acceleration of a particle executing simple harmonic motion is
AIIMS - 2007
AIIMS
Physics
wave interference
The figure shows the path of a positively charged particle 1 through a rectangular region of uniform electric field as shown in the figure. What is the direction of electric field and the direction of deflection of particles 2, 3 and 4?
AIIMS - 2007
AIIMS
Physics
Electric Field
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