List of top Physics Questions asked in NEET (UG)

A cylindrical conductor of radius R is carrying a constant current. The plot of the magnitude of the magnetic field, B with the distance, d, from the centre of the conductor, is correctly represented by the figure :

A hollow metal sphere of radius R is uniformly charged. The electric field due to the sphere at a distance r from the centre :

A 800 turn coil of effective area \(0.05\ m^2\) is kept perpendicular to a magnetic field \( 5 \times 10^{-5} T.\) When the plane of the coil is rotated by \(90\degree\) around any of its coplanar axis in \(0.1 s\), the emf induced in the coil will be:

A force\( F=20+10y \)acts on a particle in \(y-\)direction where \(F\) is in newton and y in meter. Work done by this force to move the particle from \(y=0\) to \( y=1\) m is: 

The work done to raise a mass m from the surface of the earth to a height h, which is equal to the radius of the earth, is:

Two particles \(A\) and \(B\) are moving in uniform circular motion in concentric circles of radii \(ra\) and \(rb\) with speed \(\upsilon_A\)and \(\upsilon_B\)respectively. Their time period of rotation is the same. The ratio of angular speed of \(A\) to that of \(B \)will be: 

The radius of circle, the period of revolution, initial position and sense of revolution are indicated in the fig.

y- projection of the radius vector of rotating particle P is:

The unit of thermal conductivity is:

Ionized hydrogen atoms and a-particles with same momenta enters perpendicular to a constant magnetic field, B. The ratio of their radii of their paths \( r_H: r_\alpha\) will be:

Two point charges A and B, having charges. +Q and -Q respectively, are placed at certain distance apart and force acting between them is F. If 25% charge of A is transferred to B, then force between the charges becomes:

An object flying in air with velocity $\left(20\hat{i} + 25\hat{j} - 12\hat{k}\right)$ suddenly breaks in two pieces whose masses are in the ratio $1 : 5$. The smaller mass flies off with a velocity $\left(100\hat{i} + 35\hat{j} + 8\hat{k}\right)$. The velocity of the larger piece will be :

A truck is stationary and has a bob suspended by a light string, in a frame attached to the truck. The truck, suddenly moves to the right with an acceleration of a. The pendulum will tilt :-

A particle starting from rest, moves in a circle of radius 'r'. It attains a velocity of V0 m/s in the $n^{th}$ round. Its angular acceleration will be :-

A mass falls from a height 'h' and its time of fall $'l'$ is recorded in terms of time period T of a simple pendulum. On the surface of earth it is found that I = 2T. The entire set up is taken on the surface of another planet whose mass is half of that of earth and radius the same. Same experiment is repeated and corresponding times noted as t' and T'.

$\alpha$-particle consists of:

Assuming that the gravitational potential energy of an object at infinity is zero, the change in potential energy (final - initial) of an object of mass m, when taken to a height h from the surface of earth (of radius R), is given by,

The circuit diagram shown here corresponds to the logic gate,

An object kept in a large room having air temperature of 25°C takes 12 minutes to cool from 80° to 70°C. The time taken to cool for the same object from 70°C to 60°C would be nearly :

The distance covered by a particle undergoing SHM in one time period is (amplitude = A) :

A double convex lens has focal length 25 cm. The radius of curvature of one of the surfaces is double of the other. Find the radii if the refractive index of the material of the lens is 1.5 :

A bar magnet placed in a uniform magnetic field making an angle $\theta$ with the field experiences a torque. If the angle made by the magnet with the field is doubled, the torque experienced by the magnet increases by $41.4\%$. The initial angle made by the magnet with the magnetic field is

Two point charges $A$ and $B$, having charges $+ Q$ and $- Q$ respectively, are placed at certain distance apart and force acting between them is $F$. If $25\%$ charge of $A$ is transferred to $B$. then force between the charges become

Two parallel infinite line charges with linear charge densities $+\lambda \, C/m$ and $-\lambda \, C/m$ are placed at a distance of 2R in free space. What is the electric field mid-way between the two line charges ?

The reading of an ideal voltmeter in the circuit shown is :

A copper rod of $88 \,cm$ and an aluminium rod of unknown length have their increase in length independent of increase in temperature. The length of aluminium rod is $(a_{C_{u}}=1.7 \times 10^{-5}\,K^{-1}$ and $\left.a_{A_{l}}=2.2 \times 10^{-5} K^{-1}\right)$