Dhurandhar Full Test Series for NEET 2026 - 43

A body of mass 2 kg initially at rest moves under the action of an applied horizontal force of 7 N on a table and work done against friction in 10 s. is 250 J then coefficient of kinetic friction is.

A uniform chain is stable at a horizontal table and its $\frac{1}{n}$ part is on the table. The active friction coefficient between table and chain is:

The escape speed of a projectile on the earth's surface is $11.2~km~s^{-1}$. A body is projected out with n times this speed. What is the speed of the body far away from the earth? Ignore the presence of the sun and other planets.

Which of the following is correct:

The potential energy of a body as a function of distance is given as $U(x)=(-6x^{2}+2x)$ J. The conservative force acting on body at $x=0$ m will be:

Assertion: In uniform circular motion angular velocity of the particle is constant.
Reason: In uniform circular motion linear momentum of the particle is constant.

What will be dimensions of A in the formula $A=\frac{me^{4}}{\epsilon_{0}^{2}h^{2}}$

A projectile is thrown with an initial velocity of $\vec{V}=a\hat{i}+b\hat{j}$. If the range of the projectile is 4-times of the maximum height reached by it, then :

A car is moving with a speed of $30~m/s$ on a circular path of radius 500 m. If its speed is increasing at a rate of $5~m/s^{2}$, then the magnitude of angular acceleration at that instant is:

The radius of gyration of a solid sphere about a tangent is given by:

A body attains a height equal to half of the radius of the earth. The kinetic energy of the body with which it was projected from the surface of earth:

The radius (r), length (l) and resistance (R) of a metal wire was measured in the laboratory as :
$r=(0.35\pm0.05)~cm$
$R=(100\pm10)~ohm$
$l=(15\pm0.2)~cm$
The percentage error in resistivity of the material of the wire is:

The volume of an ideal diatomic gas is doubled isobarically. The internal energy :

The excess pressure inside a spherical drop of water is four times that of another drop. Then their respective mass ratio is:

Assertion: The isothermal curves never intersect each other at a certain point.
Reason: The adiabatic changes may occur slowly.

An organ pipe $P_{1}$ closed at one end vibrating in its first overtone and another pipe $P_{2}$ open at both ends vibrating in its second overtone are in resonance with a given tuning fork. The ratio of the length of $P_{1}$ to that of $P_{2}$ is

The reciprocal of bulk modulus is called:

Find the angular frequency of particle from given equation: $\frac{4d^{2}y}{dt^{2}}+9y=4$ (Where y = displacement and t = time)

A faulty thermometer has its fixed points marked as -5 and 95. If the temperature of a body as shown on celsius scale is $65^{\circ}C$, then it's temperature shown on this faulty Thermometer is:

The ratio $C_{P}/C_{V}$ for helium is $5/3$ and that for hydrogen is 7/5. The ratio of velocity of sound in helium to that in hydrogen at the same temperature and pressure is:

A particle is executing simple harmonic motion (S.H.M.). The ratio of potential energy and total energy of the particle when its displacement is half of its amplitude will be:

Assertion (A): Susceptibility is defined as the ratio of intensity of magnetisation (M) to magnetic intensity (H).
Reason (R): Greater the value of susceptibility smaller value of intensity magnetisation.

Magnetic field at the centre of regular polygon of 'n' sides which is formed by a constant length wire, which carries current I and side of polygon is 'a':

Which of the following statements are correct:
(I) The wavelength of microwave is greater then that of UV-rays.
(II) The wavelength infrared rays is lesser than that of UV-rays
(III) The wavelength of microwave is lesser than that of infrared rays.
(IV) Gamma rays have shortest wavelengths in the electromagnetic spectrum

Assertion (A): Resonance phenomenon can exhibit by a circuit only if both L and C are present in the circuit.
Reason (R): Voltage across L and C cancel each other and the current amplitude is $\frac{V_{m}}{R}$ the total source voltage appearing across R causes resonance.

Two resistance $400\Omega$ and $800\Omega$ are connected in series with 6 V battery. The potential difference measured by voltmeter of $10k\Omega$ across $400\Omega$ resistor is:

The resultant capacitance of given circuit is :

A storage battery of emf 8 V and internal resistance $0.5\Omega$ is being charged by a 120 V DC supply using a series resistor of $15.5\Omega$. What is the terminal voltage of the battery during charging :

The figure shows a wire sliding on two parallel conducting rails placed at a separation l. A magnetic field B exists in a direction perpendicular to the plane of the rails. The force required to kept the wire moving at a constant velocity v will be:

Magnetic energy stored in solenoid is given by:

A 1m long metallic rod is rotated with an angular frequency of 200 rad/s about an axis normal to the rod passing through its one end. The other end of rod is in contact with a circular metallic ring. A constant & uniform magnetic field of 0.5 T parallel to axis exists everywhere. Find emf developed between the centre & ring:

In the given diagram there is an equilateral triangle of side a & charge -q, + 2q & + q are placed at vertex A, B & C respectively. The resultant electric field direction at mid point O is:

24 J of work to be done against an existing electric field to take a charge of 0.01 C from A to B. Find the potential difference $V_{B}-V_{A}$.

The electric field of an electromagnetic wave in free space is represented as $\vec{E}=E_{0}\cos(\omega t-kz)\hat{i}$. The corresponding magnetic induction vector will be:

If particles are moving with same velocity, the maximum de-Broglie wavelength will be for:

Two energy levels of an electron in an atom are separated by 3.3 eV. The frequency of radiation emitted when the electrons goes from higher to the lower level is:

In the given figure a diode D is connected to an external resistance $R=200\Omega$ and an e.m.f of 4.5 V. If the barrier potential developed across the diode is 0.5 V, the current in the circuit will be:

Identify the true statement of OR gate:

Although carbon, silicon and germanium have same lattice structure and four valence electrons each, their band structure leads to the energy gaps as:

In a double slit experiment, when light of wavelength 400 nm was used, the angular width of the first minima formed on a screen placed 1 m away, was found to be $0.4^{\circ}$. What will be the angular width of the first minima, if the entire experimental apparatus is immersed in water ? $(\mu_{water}=4/3)$

A nucleus with mass number 240 breaks into two fragments each of mass number 120, the binding energy per nucleon of unfragmented nuclei is 9 MeV while that of fragments is 10 MeV. The total gain in the Binding Energy in the process is :

The surface of a metal is illuminated with the light of 500 nm. The kinetic energy of the ejected photoelectrons was found to be 0.8 eV. The work function of the metal is: $[hc=1240~eV-nm]$

The minimum angle of deviation is $30^{\circ}$ by a hollow prism filled with liquid. Ray of light refracted at an angle $30^{\circ}$ at the first surface. If refractive index of liquid is n. Then find $n^{2}$:

In a Young's double-slit experiment the fringe width is 0.24 mm. If the wavelength of light used is increased by 10% and the separation between the slits is also increased by 10%, the fringe width will be:

If the distance between object and its two times magnified virtual image produced by a curved mirror is 15 cm, the focal length of the mirror must be: