List of top Physics Questions asked in AIIMS

What will be ratio of speed in first two seconds to the speed in next $4\,s$ ?
A black body emits heat at the rate of $20\, W$. When its temperature is $727^{\circ} C$. Another black body emits heat at the rate of $15\, W$, when its temperature is $227^{\circ} C$. Compare the area of the surface of the two bodies, if the surrounding is at NTP.
Two batteries of emf $4\, V$ and $8\, V$ with internal resistance $1\, \Omega$ and $2\, \Omega$ respectively are connected to an external resistance $R=\, \Omega$ as shown in figure. The current in circuit and the potential difference between $P$ and $Q$ respectively will be
If there were a reduction in gravitational effect, which of the following forces do you think would change in some respect?
A body at a temperature of $728^{\circ} C$ and has surface area $5\, cm ^{2}$, radiates $300\, J$ of energy each minute. The emissivity is (Given Boltzmann constant $=5.67 \times 10^{-8} Wm ^{2} K ^{4}$ )
The correct graph respectively the relation between energy $(E)$ of photoelectrons and frequency $v$ of incident light is
The maximum vertical distance through which a full dressed astronaut can jump on the earth is $0.5\, m$. Estimate the maximum vertical distance through which he can jump on the moon, which has a mean density $\frac{2}{3}$ rd that of the earth and radius one quarter that of the earth.
As shown in figure a simple harmonic motion oscillator having identical four springs has time period
If a conductor is given charge then no excess inner charge appears. Electric field inside conductor is zero.
The value of g at a particular point is $9.8 \, ms^{-2}$. Suppose theearth suddenlyshrinks uniformly to half its present size without losing any mass. The value ofg at the same point (distance of the point from the centre of earth does not change) will now be
Which of the following is the best method to reduce eddy currents?
When a slow neutron is captured by a $^{235}_{92} U$ nucleus, a fission energy releasing $200\, MeV$. If power of nuclear reactor is $100\, W$ then rate of nuclear fission is
Velocity of sound waves in air is $330 \,m/s$. For a particular sound in air, a path difference of $40 \,cm$ is equivalent to phase difference of $1.6\pi$ The frequency of the wave is
Two spherical conductors $A$ and $B$ of radii $a$ and $b(b>a)$ are placed concentrically in air. The two arc connected by a copper wire as shown in figure. The equivalent capacitance of the system is
The potential difference across the $3 \,\Omega$ resistor shown in figure is
The magnetic flux linked with the coil varies with time as $\phi = 3t^2+4t+9$.The magnitude of the induced emf of $2s$ is
The force $F$ is given by expression $F=A \cos (B x)+C \sin (D t)$, where $x$ is the displacement and $t$ is the time. Then dimension of $\frac{D}{B}$ are same as that of
Polaroid glass is used in sun glasses because
In an intrinsic semiconductor band gap is $1.2\, eV$ then ratio of number of charge carriers at $600\, K$ and $300\, K$ is
The de-Broglie wavelength equation has significance for any microscopic and submicroscopic particles. de-Broglie wavelength is inversely proportional to the mass of the object its velocity is constant.
Resolving power of a telescope depends only on wavelength. This is proportional to square of wavelength.
If optical density of a substance is more than that of water then the mass density of substance can be less than water. Optical density and mass density are not related.
Heat from the sun reaches the earth by convection. Air can be heated only by convection.
Electrons move from a region of higher potential to a region of lower potential. An electron has less potential energy at a point where potential is higher and vice-versa.
At the centre of earth a body has centre of mass, but no centre of gravity. This is because $g = 0$ at the centre of earth.