NEET 2022 Physics Questions

Plane angle and solid angle have:

The area of a rectangular field (in m²) of length 55.3 m and breadth 25 m, after rounding off the value for correct significant digits, is:

The dimensions [MLT⁻²A⁻²] belong to the:

Match List-I with List-II: List-I (a) Gravitational constant (G) (b) Gravitational potential energy (c) Gravitational potential (d) Gravitational intensity List-II (i) [L²T⁻²] (ii) [M⁻¹L³T⁻²] (iii) [LT⁻²] (iv) [ML²T⁻²] Choose the correct match:

The ratio of the radius of gyration of a thin uniform disc about an axis through its centre and normal to its plane to that about its diameter is:

A flywheel's angular speed changes uniformly from 1200 rpm to 3120 rpm in 16 s. Its angular acceleration (rad/s²) is:

Two objects of mass 10 kg and 20 kg are connected to the ends of a rigid massless rod of length 10 m. The distance of the centre of mass from the 10 kg mass is:

The displacement-time (x-t) graphs of two moving particles make angles of 30° and 45° with the time axis as shown. The ratio of their respective velocities $v_1 : v_2$ is:

The ratio of the distances travelled by a freely falling body in the 1st, 2nd, 3rd and 4th second of its motion is:

A body of mass 60 g experiences a gravitational force of 3.0 N at a point. The magnitude of the gravitational field intensity at that point is:

Match List-I with List-II: List-I (a) Gravitational constant (G) (b) Gravitational potential energy (c) Gravitational potential (d) Gravitational intensity List-II (i) [L²T⁻²] (ii) [M⁻¹L³T⁻²] (iii) [LT⁻²] (iv) [ML²T⁻²] Choose the correct answer:

A spherical ball is dropped in a long column of a highly viscous liquid. Which curve in the graph shown represents the speed of the ball (v) as a function of time (t)?

If a soap bubble expands, the pressure inside the bubble:

A ball is projected with a velocity $10\ \mathrm{m/s}$ at an angle of $60^\circ$ with the vertical direction. Its speed at the highest point of its trajectory will be:

An electric lift with a maximum load of 2000 kg (lift + passengers) is moving up with a constant speed of 1.5 m/s. The frictional force opposing the motion is 3000 N. The minimum power delivered by the motor to the lift (in watts) is (g=10 m/s²)

A shell of mass m is initially at rest. It explodes into three fragments having masses in the ratio 2 : 2 : 1. The two equal fragments fly off along mutually perpendicular directions, each with speed v. The speed of the third (lighter) fragment is:

The volume occupied by the molecules contained in 4.5 kg of water at STP, if the intermolecular forces vanish away, is:

Given below are two statements: Statement I: The stretching of a coil spring is determined by the shear modulus of the material of the spring. Statement II: A coil spring of copper has more tensile strength than a steel spring of same dimensions. In the light of the above statements, choose the most appropriate answer from the options given below:

Two pendulums of lengths 121 cm and 100 cm start swinging in phase, both at their mean position in the same phase. The minimum number of vibrations of the shorter pendulum after which the two are again in phase at the mean position is

If the tension in a stretched string is doubled, the ratio of the initial speed to the final speed of a transverse wave along the string is:

An ideal gas undergoes four different processes from the same initial state (see figure). The processes are adiabatic, isothermal, isobaric and isochoric. The curve which represents the adiabatic process among $1, 2, 3, 4$ is

A copper wire of length 10 m and radius (10$^{-2}$/$\surd\pi$) m has resistance 10 $\Omega$. The current density for an electric field strength of 10 V/m is:

Two resistors 100 $\Omega$ and 200 $\Omega$ are connected in parallel. The ratio of thermal energy developed in 100 $\Omega$ to that in 200 $\Omega$ in a given time is:

As the temperature increases, the electrical resistance:

A Wheatstone bridge is used to determine an unknown resistance X by adjusting the variable resistance Y. For the most precise measurement of X, the resistances P and Q:

Two hollow conducting spheres of radii R1 and R2 (R1 >> R2) have equal charges. The potential would be:

The angle between the electric lines of force and the equipotential surface is:

A capacitor of capacitance C = 900 pF is charged fully by 100 V battery B. Then B is disconnected and connected to another uncharged capacitor of capacitance C = 900 pF. The electrostatic energy stored by the system (b) is:

As the temperature increases, the electrical resistance:

The truth table for the given logic circuit is:

In half wave rectification, if the input frequency is 60 Hz, then the output frequency would be:

Given below are two statements. Statement I: Biot-Savart's law gives an expression for the magnetic field strength of an infinitesimal current element (Idl) of a current carrying conductor only. Statement II: Biot-Savart's law is analogous to Coulomb's inverse square law of charge q, with the former being related to the field produced by a scalar source, Idl, while the latter being produced by a vector source, q. In light of the above statements choose the most appropriate answer from the options given below:

A long solenoid of radius 1 mm has 100 turns per mm. If 1 A current flows in the solenoid, the magnetic field strength at the centre of the solenoid is:

From Ampère's circuital law for a long straight wire of circular cross-section carrying a steady current, the variation of magnetic field in the inside and outside region of the wire is:

Two transparent media A and B are separated by a plane boundary. The speed of light in those media are 1.5 × 10⁸ m/s and 2.0 × 10⁸ m/s respectively. The critical angle for a ray of light for these two media is:

A biconvex lens has radii of curvature 20 cm each. If the refractive index of the material of the lens is 1.5, the power of the lens is:

A light ray falls on a glass surface of refractive index √3 at an angle of 60°. The angle between the refracted and reflected rays would be:

When light propagates through a material medium of relative permittivity ε_r and relative permeability µ_r, the velocity of light v is given by (c = velocity of light in vacuum)

Match List I (Electromagnetic waves) with List II (Wavelength) and choose the correct match. List I (a) AM radio waves (b) Microwaves (c) Infrared waves (d) X-rays List II (i) 10⁻¹⁰ m (ii) 10² m (iii) 10⁻² m (iv) 10⁻⁴ m Choose the correct match:

A series LCR circuit with inductance 10 H, capacitance 10 μF, resistance 50 Ω is connected to an ac source of voltage, V = 200 sin(100 t) volt. If the resonant frequency of the LCR circuit is v₀ and the frequency of the ac source is v, then:

The peak voltage of the ac source is equal to :

When two monochromatic lights of frequency ν and ν/2 are incident on a photoelectric metal, their stopping potentials become V_s/2 and V_s respectively. The threshold frequency for this metal is:

The graph which shows the variation of the de Broglie wavelength (λ) of a particle and its associated momentum (p) is:

A square loop of side 1 m and resistance 1 Ω is placed in a magnetic field of 0.5 T. If the plane of loop is perpendicular to the direction of magnetic field, the magnetic flux through the loop is

A big circular coil of 1000 turns and average radius 10 m is rotating about its horizontal diameter at 2 rad s⁻¹. If the vertical component of earth's magnetic field at that place is 2 × 10⁻⁵ T and electrical resistance of the coil is 12.56 Ω, then the maximum induced current in the coil will be:

Let T₁ and T₂ be the energy of an electron in the first and second excited states of hydrogen atom, respectively. According to Bohr's model of an atom, the ratio T₁ : T₂ is:

In a Young's double slit experiment, a student observes 8 fringes in a certain segment of screen when a monochromatic light of 600 nm wavelength is used. If the wavelength of light is changed to 400 nm, then the number of fringes he would observe in the same region of the screen is

Two point charges −q and +q are placed at a distance L apart, as shown in the figure. The magnitude of the electric field intensity at a distance R (R >> L) varies as