List of top Physics Questions asked in AIIMS

A uniform metallic rod rotates about its perpendicular bisector with constant angular speed. If it is heated uniformly to raise its temperature slightly, then

A uniform disc is acted by two equal forces of magnitude $F$. One of them, acts tangentially to the disc, while other one is acting at the central point of the disc. The friction between disc surface and ground surface is $n F$. If $r$ be the radius of the disc, then the value of $n$ would be (in $N$)

While keeping area of cross-section of a solenoid same, the number of turns and length of solenoid one both doubled. The self inductance of the coil will be

The time period of a particle undergoing SHM is 16 s. It starts motion from the mean position. After 2 s, its velocity is 0.4 m s. The amplitude is

A long straight wire carries 10 $A \,d.c$. current an electron travels perpendicular to the plane of this wire at a distance $0.1\, m$ with velocity $5.0 \times10^6 m \,s^{-1}$. Force acting on the electron due to current in wire is

A rod of length $L$ is hinged from one end. It is brought to a horizontal position and released. The angular velocity of the rod, when it is in vertical position is

In a uniform electric field a charge of $3\, C$ experiences a force of $3000\, N$. The potential difference between two points $1\, cm$ apart along the electric line of force will be

The most suitable metal for making electromagnets and transformer cores is

Resolving power of reflecting microscope increases with

Two waves represented by $y\, =\, asin(\omega\,t - kx)$ and $y \,= \,acos(\omega\,t - kx)$ are superposed. The resultant wave will have an amplitude

Two parallel long wires A and B carry currents $i_1$ and $i_2 (< i_1)$. When $i_1$ and $i_2$ are in the same direction, the magnetic field at a point mid way between the wires is $10 \,\mu\,T$. If $i_2$ is reverse the field becomes $30\, \mu T$. The ratio $i_1/i_2$ is

Two conducting circular loops of radii $R_{1}$ and $R_{2}$ are placed in the same plane with their centres coinciding. If $R_{1} >\, R_{2}$ the mutual inductance $M$ between them will be directly proportional to

The diameter of the plate of a parallel plate condenser is $6\,cm$. If its capacity is equal to that of a sphere of diameter $200\, cm$, the separation between the plates of the condenser is

If the length and area of cross-section of a conductor are doubled, then its resistance will be

The ratio of inertial mass to gravitational mass is equal to one. The inertial mass and gravitational mass of a body are equivalent.

Magnetic field interacts with a moving charge and not with a stationary charge. A moving charge produces a magnetic field.

According to kinetic theory of gases, molecules of a gas behave like

A triply ionized beryllium ($Be^{+++}$) has the same orbital radius as the ground state of hydrogen. Then the quantum state $n$ of $Be^{3+}$ is

Considering normal incidence of ray, the equivalent refractive index of combination of two slabs shown in figure is:

A particle of charge q and mass m starts moving from the origin under the action of an electric field $\vec{E}=E_{0} \hat{i} $and $\vec{B}=B_{0} \hat{i}$ with a velocity $\vec{v}=v_{0} \hat{j}$ . The speed of the particle will become $\frac{\sqrt{5}}{2}v_{0}$ after a time

A particle moves along a curve of unknown shape but magnitude offeree $F$ is constant and always acts along tangent to the curve. Then,

A closely wound solenoid of $2000$ turns and area of cross-section $1.5 \times 10^{-4} m ^{2}$ carries a current of $2.0 A$. It is suspended through its center and perpendicular to its length, allowing it to turn in a horizontal plane in a uniform magnetic field $5 \times 10^{-2} T$, making an angle of $30^{\circ}$ with the axis of the solenoid. The torque on the solenoid will be

A block of mass 2 kg is placed on the floor. The coefficient of static friction is 0.4. If a force of 2.8 N is applied on the block parallel to the floor, the force of friction between the block and the floor is (g = 10 m s)

Figure shown a smooth inclined plane of inclination $\theta$ fixed in a car, $A$ sphere is set in pure rolling on the incline. For what value of a (the acceleration of car in horizontal direction) the sphere will continue pure rolling

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.