List of top Physics Questions asked in AIIMS

A cord is used to lower vertically a block of mass $M$ by a distance $d$ with constant downward acceleration $\frac{g}{4}$. Work done by the cord on the block is
A transformer cannot work on $DC$ supply. $DC$ changes neither in magnitude nor in direction.
A pure semiconductor has negative temperature coefficient of resistance. On raising the temperature, more charge carriers are released, conductance increases and resistance decreases.
The magnetic poles of earth do not coincide with the geographic poles. The discrepancy between the orientation of a compass and true north-south direction is known as magnetic declination.
There is no dispersion of light refracted through a rectangular glass slab. Dispersion of light is the phenomenon of splitting of a beam of white light into its constituent colours.
A transmitter transmits at a wavelength of $300\, m$. A condenser of capacitance $2.4\, \mu F$ is being used. The value of the inductance for the resonant circuit is approximately
Which of the following pairs does not have same dimensions ?
What is moment of inertia of a cylinder of radius $r$, along its height ?
Two spherical soap bubbles of radii $a$ and $b$ in vacuum coaleasce under isothermal conditions. The resulting bubbles has a radius given by
The mass and diameter of a planet are twice those of earth. The period of oscillation of pendulum on this planet will be (if it is a seconds pendulum on earth)
The latent heat of vaporisation of a substance is always
The core of any transformer is laminated so as to
If the energy, $E = G^p \,h^q \,c^r$, where $G$ is the universal gravitational constant, $h$ is the Planck?? constant and $c$ is the velocity of light, then the values of $p$, $q$ and $r$ are, respectively
Four holes of radius $R$ are cut from a thin square plate of side $4R$ and mass $M$. The moment of inertia of the remaining portion about z-axis is
X-ray astronomy is possible only from satellites orbiting the earth. Efficiency of X-rays telescope is large as compared to any other telescope.
Two balls of different masses are thrown vertically upward with same speed. They will pass through their point of projection in the downward direction with the same speed. The maximum height and downward velocity attained at the point of projection are independent of the mass of the ball.
The apparent weight of a body in an elevator moving with some downward acceleration is less than the actual weight of a body. The part of the weight is spent in producing downward acceleration, when body is in elevator.
In javelin throw, the athlete throws the projectile at an angle slightly more than 45$^{\circ}$. The maximum range does not depend upon angle of projection.
The fundamental frequency of an open organ pipe increases as the temperature is increased. As the temperature increases, the velocity of sound increases more rapidly than length of the pipe.
The change in kinetic energy of a particle is equal to the work done on it by the net force. Change in kinetic energy of particle is equal to the work done only in case of a system of one particle.
An AC ammeter is used to measure current in a circuit. When a given direct current passes through the circuit, the AC ammeter reads 3 A. When another alternating current passes through the circuit, the AC ammeter reads 4 A. Then the reading of this ammeter, if DC and AC flow through the circuit simultaneously, is
A reversible engine converts one-sixth of the heat input into work. When the temperature of the sink is reduced by 62$^{\circ}$C, the efficiency of the engine is doubled. The temperatures of the source and sink are
A liquid is kept in a cylindrical vessel which is being rotated about a vertical axis through the centre of the circular base. If the radius of the vessel is $r$ and angular velocity of rotation is $\omega$, then the difference in the heights of the liquid at the centre of the vessel and the edge is
A capillary tube of radius $r$ is immersed in water and water rises in it to a height $h$. The mass of water in the capillary tube is $5\,g$. Another capillary tube of radius $2\,r$ is immersed in water. The mass of water that will rise in this tube is
A block of mass $10\, kg$ is moving in $x$-direction with a constant speed of $10\, m / s$. It is subjected to a retarding force $F=-0.1 \times J / m$ during its travel from $x=20\, m$ to $x=30\, m$. Its final kinetic energy will be :