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NEET UG practice questions

Physics, Chemistry and Biology practice with answers and explanations. 1,164 questions in the bank.

1. 1A 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…Physics· Re-NEET 2026· Moderate
2. 2The 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…Physics· Re-NEET 2026· Moderate
3. 3Two identical inductors are connected in two different configurations $P$ and $Q$, where a time varying current $I(t)$ is flowing, as shown…Physics· Re-NEET 2026· Moderate· figure
4. 4For sound waves, if the number of nodes for the 5th harmonic of an open-ended pipe is $n$ and that for the 9th harmonic of the same pipe…Physics· Re-NEET 2026· Moderate
5. 5Consider a long solenoid of length $l$ and radius $r$. If $n$ is the number of turns per unit length and $\mu_0$ is the permeability of…Physics· Re-NEET 2026· Moderate
6. 6Consider a particle moving along a straight line, whose position as a function of time is given by $s(t) = \alpha t^2 – \beta t + \gamma$,…Physics· Re-NEET 2026· Moderate
7. 7Consider the following nuclear reaction $^{238}$U → $^{234}$Th + $^4$He Take masses of $^{238}$U, $^{234}$Th and $^4$He as 238.050 u,…Physics· Re-NEET 2026· Moderate
8. 8A beam of light falls on a metal surface such that photo-electrons are generated. If power of the light source starts to decrease linearly…Physics· Re-NEET 2026· Moderate· figure
9. 9Three identical capacitors, *P*, *Q* and *S*, each of the capacitance *C*, are connected to a battery of voltage *V*, as shown in the…Physics· Re-NEET 2026· Moderate· figure
10. 10Water flows in a streamline motion through a horizontal pipe of circular cross-section as shown in the figure. The pressure difference of…Physics· Re-NEET 2026· Moderate· figure
11. 11A current $I_0$ flows through a metallic circular loop of radius $r$ as shown in the figure. Resistance of the segment ABC is half that of…Physics· Re-NEET 2026· Moderate· figure
12. 12In the measurement of viscosity of liquids using terminal velocity experiment, spherical balls of same radius but having different…Physics· Re-NEET 2026· Moderate· figure
13. 13Two planets $P_1$ and $P_2$ with equal mass have radii $R_1$ and $R_2$, respectively, where $R_2 = \frac{R_1}{2}$. The escape speeds of…Physics· Re-NEET 2026· Moderate
14. 14In a solar system, the time-period of revolution of a planet tracing a circular orbit of radius $R$ is proportional to:Physics· Re-NEET 2026· Moderate
15. 15Two infinitely long parallel conducting wires $A$ and $B$ carry currents $I$ and $2I$, respectively, in the same direction. The wire $A$…Physics· Re-NEET 2026· Moderate· figure
16. 16An ideal Zener diode with breakdown voltage of –3 V is reverse biased with a negative input voltage $V_i = -5$ V. The magnitude of voltage…Physics· Re-NEET 2026· Moderate· figure
17. 17In an adiabatic expansion, the temperature of one mole of an ideal monatomic gas ($\gamma = 5/3$) decreases from 60 K to 50 K. The work…Physics· Re-NEET 2026· Moderate
18. 18A ray of light with wavelength $\lambda$ is incident on three different photoelectric cells namely 1, 2 and 3. The threshold wavelength of…Physics· Re-NEET 2026· Moderate
19. 19A photon and an electron, each of 20 eV energy, move in free space. The ratio of linear momentum of electron $p_e$ to that of photon…Physics· Re-NEET 2026· Moderate
20. 20Which of the following measurements require ‘index correction’?Physics· Re-NEET 2026· Moderate
21. 21A unit positive point charge is taken slowly through an infinitesimally thin tube that is inside a charged dielectric sphere of radius R,…Physics· Re-NEET 2026· Moderate· figure
22. 22Consider three media P, Q and R with refractive indices 1, 1.25, and 1.5 respectively. The medium Q having a thickness of 5 cm is placed…Physics· Re-NEET 2026· Moderate· figure
23. 23A frictionless circular wire of unit radius is fixed on the horizontal plane. Two-point particles of unit mass start moving simultaneously…Physics· Re-NEET 2026· Moderate· figure
24. 24The temperature of a metallic sphere of radius $R$ is increased by a small amount $\Delta T$. If the linear coefficient of thermal…Physics· Re-NEET 2026· Moderate