Search topic-wise, subject-wise and keyword-wise NEET questions with answers and explanations.
180 NEET 2026 questions available
Search question text, option text, supplied answers, subject, review fields, keywords, number and year. Source images remain the exact reference for formulas and symbols.
A particle of mass M moves along a horizontal x axis from x=0 to x = L. The coefficient of kinetic friction varies as a function of x as p(x) = p,— ox, where p,, a are constants of appropriate dimensions, so that r{L)=0. The total work done by the frictional force during the motion is npMgl, where g is the acceleration due to gravity. The value of n is :
The mean free path of molecules in an ideal gas A is half that of another ideal gas B. The diameter of the spherical molecules of gas A is twice the diameter of the molecules of B. If number densities of the gases A and B are n, and n,, respectively, then the correct option is :
Two identical inductors are connected in two different configurations P and Q, where a time varying current I(t) I flowing, as shown in the figure. The induced emf between points a and b for configuration P is E, and that for configuration Q is E,. The ratio E/E, is : [Neglect the effect of mutual inductance.) 0m
For sound waves, if the number of nodes for the 5° harmonic of an open-ended pipe is n and that for the 9" harmonic of the same pipe with one of its ends closed is m, the ratio = is : 5 9 0)] 3 2 3 3 31 4 5
Consider a long solenoid of length | and radius r. If n is the number of turns per unit length and y, is the permeability of free space, the inductance of the solenoid is :
Consider a particle moving along a straight line, whose position as a function of time is given by s(t) = at? - Bt + v, where 0. = 1 ms? p = 6 ms™ and ¥ = 5 m. The average speed of the particle, in ms™, fromt=0tot=6sis :
Consider the following nuclear reaction : #4 — ®Th+*He Take masses of ZU, *'Th and ‘He as 238.050 u, 234.043 u and 4.003 u, respectively. The Q value for the reaction, in keV, is : [Given : 1 u= 931.5 MeV
A beam of light falls on a metal surface such that photo-electrons are generated. If power of the light source starts to decrease linearly with time t, then variation of the photocurrent I and magnitude of the stopping potential [VI with time is best represented by : 1 ) 's t t
Three identical capacitors P, Q and S, each of the capacitance C, are connected to a battery of voltage V, as shown in the figure. If the energy stored in the capacitor P and total energy stored in the system are U, and U,, respectively, then the ratio oe is : T PQ — S \Y
Water tlows in a streamline motion through a horizontal pipe of circular cross-section as shown in the figure. The pressure difference of water between P and Q is 15 Nm™ The area of cross-section at P and Q are 40 cm’ and 20 cm’, respectively. The rate of flow of water through the pipe, in cm’™, is : [Take density of water = 1000 kg m™] P _— Ea TN
A current I; flows through a metallic circular loop of radius r as shown in the figure. Resistance of the segment ABC is half that of ADC. Magnitude of magnetic field at the centre O of the loop is : A 1 C I I Wl,
Chapter review pending · Topic review pending
Answer: 1 · Option 1 - Hoo 9) Hoo m) 12r (@) 4r Bolo Holy
In the measurement of viscosity of liquids using terminal velocity experiment, spherical balls of same radius but having different densities are used. The variation of the terminal velocity (v) with the ratio of density of spherical ball (c) to density of the liquid (p), is best represented by : v Vv a) -
Two planets P, and P, with equal mass have radii R, and R,, respectively, where R, = The escape speeds of P, and P, are v, and v,, respectively. Then V2 is: Vi 1 03] NA 21 3 V2 @ 2
Two infinitely long parallel conducting wires A and B carry currents 1 and 2I, respectively, in the same direction. The wire A has uniform mass per unit length A and lies on an insulated floor. The wire B is kept fixed at a height h above the floor. The minimum magnitude of h so that the wire A does not rise from the floor is : [g is the acceleration due to gravity and yu, is the permeability of free space] ul? 12 W 5s
An ideal Zener diode with breakdown voltage of -3V is reverse biased with a negative input voltage V, = -5V. The magnitude of voltage difference between points B and A is : ) B R A (H3v
A ray of light with wavelength is incident on three different photo-electric cells namely 1, 2 and 3. The threshold wavelength of these photoelectric cells are A, A, and A,, respectively and the magnitude of stopping potentials of these cells are V,, V, and V,, respectively. The relation between A and threshold wavelengths are A; < A, A, > A and A; >> A. The correct option is :
A photon and an electron, each of 20 eV energy, move in free space. The ratio of linear momentum of electron p, to that of photon OL is : Pen (Take speed of light = 3 x 10° ms”, charge of electron = -1.6 x 10™ C and mass of electron =9 x10*kg) 2 1 (1 150 2 250
A unit positive point charge is taken slowly through an infinitesimally thin tube that is inside a charged dielectric sphere of radius R, having uniform positive charge density p, as shown in the figure. The initial and final positions of the charge are marked by A and B at distances 2R and 3R respectively, from the centre of the sphere. In this process, the magnitude of the total work done on the point charge is PR® ne, The value of nis : (e, is the permittivity of vacuum) B 3R 7
Consider three media P, Q and R with reiractive indices 1, 1.25, and 1.5, respectively. The medium Q having a thickness of 5 cm is placed between extended media P and R as shown in the figure. An object O is placed at the centre of medium Q. If viewed from medium P near the normal direction, the apparent depth of O is h,. For similar observation from medium R, the apparent depth is h,. The value of Ih, —h,!, in cm, is : | 0-
A frictionless circular wire of unit radius is tixed on the horizontal plane. Two point particles of unit mass start moving simultaneously from point Alo = 7) with identical uniform angular speeds in opposite directions, and meet again at point Bo = -
Chapter review pending · Topic review pending
Answer: 3 · Option 3 - During this time, which of the following figures schematically represent the magnitude of the total linear momentum P of the system, as a function of 6 ? Al EN fie B! Pp p ! No Na [2] [2] n/2 -n/2 n/2 -n/2 Pp pP i = ’ N 6 [5] n/2 -n/2 n/2 -n/2
The temperature of a metallic sphere of radius R is increased by a small amount AT. If the linear coefficient of thermal expansion of the metal is a, the approximate increase in the volume of the sphere is :
