List of top Physics Questions asked in AIIMS

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.

A body can be at rest even when it is under the action of any number of external forces. Vector sum of all the external forces is zero.

A particle is projected from the ground with an initial speed of v at an angle $\theta$ with horizontal. The average velocity of the particle between its point of projection and highest point of trajectory is

A car is travelling with a linear velocity $v$ on a circular road of radius $r$. If it is increasing its speed at the rate of $a m / s ^{2}$, then the resultant acceleration will be

The half-life of a radioactive substance is $10$ days. This means that

A source and an observer are moving towards each other with a speed equal to $v/2$, where $v$ is the speed of sound. The source is emitting sound of frequency $n$. The frequency heard by one observer will be

A prism is made up of material of refractive index $\sqrt{3}$. The angle of prism is $A$. If the angle of minimum deviation is equal to the angle of the prism, then the value of $A$ is

1 curie is

An alternating voltage V = $V_0 \sin \omega t$ is applied across a circuit. As result $I = I_0 \sin(\omega t - \pi /2)$ flows in it. The power consumed per cycle is

To double the covering range of a TV transmitter tower, its height should be made

A boy of mass $m$ stands on one end of a wooden planck of length $L$ and mass $M$. The plank is floating on water. If the boy walks from one end of the plank to the other end at a constant speed, the resulting displacement of the plank is given by

Sound waves do not show the phenomenon of