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NEET Physics Answer Key 2025: The National Testing Agency (NTA) held the National Eligibility Cum Entrance Test (NEET) UG 2025 Examination today, May 4, 2025. The examination was held from 2 PM to 5 PM, in 566 cities across India and abroad. The NEET 2025 Examination was held in offline (pen-and-paper-based) mode. As per the NEET 2025 exam pattern, the question paper had 45 questions on Physics. Each question has a weightage of 4 marks and one mark will be deducted from each wrong answer. Interested candidates can check the unofficial NEET Physics Answer Key 2025 available here.
NEET Physics Answer Key 2025 (Available) (Live)
The Physics Unofficial Answer Key 2025 for the questions asked in the NEET 2025 examination are given below.
| NEET Physics Questions 2025 | NEET Physics Answer Key 2025 |
| Question 1: The kinetic energies of two similar cars A ano B are 100 J and 225 J respectively. On applying breaks, car A stops after 1000 m and car B stops after 1500 m. If F_{A} and F_{B} are the forces applied by the breaks on cars A and B, respectively, then the ratio F_{A} / F_{B} is | Answer: (2) 2/3 |
| Question 2: The output (Y) of the given logic implementation is similar to the output of an/a______ gate | Answer: (2) NAND |
| Question 3: Three identical heat conducting rods are connected in series as shown in figure. | Answer: (3) 5/3 |
| Question 4: An electron (mass 9 * 10 ^ - 31 kg and charge 1.6 * 10 ^ - 19 * C ) moving with speed c/100 (c = speed of light) is injected into a magnetic field B. of magnitude 9 * 10 ^ - 4 * T perpendicular to its direction of motion. We wish to apply an uniform electric field together with the magnetic field so that the electron does not deflect from its path. Then (speed of ligte c = 3 * 10 ^ 8 * m * s ^ - 1 ) | Answer: (3) Eis parallel to its magnitude is 27 * 10 ^ 2 * V * m ^ - 1 |
| Question 5: A ball of mass 0.5 kg is dropped from a height of 40 m. The ball hits the ground and rises to a height of 10 m. The impulse imparted to the ball during its collision with the ground is (Take g = 9.8 m/s²) | Answer: (1) 21 NS |
| Question 6: The circuit passing through the battery in the given circuit is... | Answer: (2) 0.5 A |
| Question 7: Which of the following options represent the variation of photoelectric current with property of light shown on the x-axis? | Answer: (1) A only |
| Question 8: A bob of heavy mass is suspended by a light string of length 1. The bob is given a horizontal velocity vo as shown in figure. If the string gets slack at some point Pmaking an angle ) from the horizontal, the ratio of the speed v of the bob at point P to its initial speed vo is: | Answer: (4) |
| Question 9: A 2 amp current is flowing through two different small circular copper coils having radii ratio 1:2. The ratio of their respective magnetic moments will be | Answer: (1) 1:4 |
| Question 10: A microscope has an objective of focal length 2 cm, eyepiece of focal length 4 cm and the tube length of 40 cm. If the distance of distinct vision of eye is 25 cm, the magnification in the microscope is | Answer: (3) 150 |
| Question 11: An unpolarized light beam travelling in air is incident on a medium of refractive index 1.73 at Brewster's angle. Then- | Answer: (1) reflected light is completely polarized and the angle of reflection is close to 60° |
| Question 12: Two identical charged conducting spheres A and B have their centres separated by a certain distance. Charge on each sphere is q and the force of repulsion between them is F. A third identical uncharged conducting sphere is brought in contact with sphere A first and then with B and finally removed from both. New force of repulsion between spheres A and B (Radii of A and B are negligible compared to the distance of separation so that for calculating force between them they can be considered as point charges) is best given as : |
Answer: (4) 3F/8 |
| Question 13: In some appropriate units, time (t) and position (x) relation of a moving particle is given by t=x2+x. The acceleration of the particle is | Answer: (2) -2/(2x+1)^3 |
| Question 14: Two cities X and Y are connected by a regular bus service with a bus leaving in either direction every T min. A girl is driving scooty with a speed of 60 km/h in the direction X to Y notices that a bus goes past her every 30 minutes in the direction of her motion, and every 10 minutes in the opposite direction. Choose the correct option for the period T of the bus service' and the speed (assumed constant) of the buses. |
Answer: (4) 15 mins, 120 km/h |
| Question 15: A uniform rod of mass 20 kg and length 5 m leans against a smooth vertical wall making an angle of 60° with it. The other end rests on a rough horizontal floor. The friction force that the floor exerts on the rod is (take g = 10 m/s2) | Answer: (2) 100 √3 N |
| Question 16: A wire of resistance R is cut into 8 equal pieces. From these pieces two equivalent resistances are made by adding four of these together in parallel. Then these two sets are added in series, The net effective resistance of the combination is : |
Answer: (3) R/16 |
| Question 17: A constant voltage of 50 V is maintained between the points A and B of the circuit shown in the figure. The current through the branch CD ofithe circuit is : |
Answer: (2) 2.0 A |
| Question 18: To an ac power supply of 220 V at 50 Hz, a resistor of 20 2, a capacitor of reactance 25.2 and an inductor of reactance 452 are connected in series. The corresponding current in the circuit and the phase angle between the current and the voltage is, respectively - |
Answer: (2) 7.8 A and 45 degree |
| Question 19: A balloon is made of a material of surface lension S and itsinflation outlet (from where gas is filled in it) has small area A. It is filled with a gas of density p and takes a spherical shape of radius'R. When the gas is allowed to flow freely out of it, its radius r changes from R to 0 (zero) in time T. If the speed v(r) of gas coming out of thè balloon depends on r as and To Sa ABpY Ro then |
Answer: (3) a=,B =- l,Y=2,8=2 |
| Question 20: A full wave rectifier circuit with diodes (D1) and (D2) is shown in the figure. If input supply voltage Vin = 220sint (100 π r) volt, then at 1 = 15 msec |
Answer: (2) D1 is reverse biased, D2 is forward biased |
| Question 21: Consider the diameter of a spherical object being measured with the help of a Vernier callipers. Suppose its 10 Vernier Scale Divisions (V.S.D.) are equal to its 9 Main Scale Divisions (M.S.D.). The least division in the M.S. is 0.1 cm and the zero of V.S. is at x= 0.1 cm when the jaws of Vernier callipers are closed. If the main scale reading for the diameter is M = 5 cm and the number of coinciding vernier division-is 8, the measured diameter after zero error correction, is |
Answer: (3) 4.98 cm |
| Question 22: A pipe open at both ends has a fundamental frequency f in air. The pipe is now dipped vertically in a water drûm to half of its length. The fundamental frequency of the air column is now equal to : |
Answer: (2) f |
| Question 23: AB is a part of an electrical circuit (see figure). The potential difference "V - VB", at the instant when current i= 2 A and is increasing at a rate of 1 amp / second is: |
Answer: (4) 10 volts |
| Question 24: A container has two chambers of volumes V1 = 2 litres and V2 = 3 litres separated by a partition made of a thermal insulator. The chambers contains n1 = 5 and n2 = 4 moles of ideal gas at pressures p1 = 1 atm and P2 = 2 atm, respectively. When the partition is removed, the mixture attains an equilibrium pressure of : |
Answer: (2) 1.6 atm |
| Question 25: In a certain camera,-a combination of four similar thin convex lenses are arranged axially in contact. Then the power of the combination and the total magnification in comparison to the power (p) and magnification (m) for each lens will be, respectively - |
Answer: (3) 4p and m^4 |
| Question 26: Two gases A and Btare filled at the same pressure in separate cylinders with movable pistons of radius rAwand rB, respectively. On supplying an equal amount of heat to both the systems reversibly under constant pressure, the pistons of gas A and B are displaced by 16 cm and 9 cm, respectively. If the change in their internal energy is the same, then the ratio | Answer: (2) 3/4 |
| Question 27: A sphere of radius R iscut from a larger solid sphere of radius 2R as shown in the figure. The ratio of the moment of inertia of the smaller sphere to that of the rest part of the sphere about the Y-axis is : | Answer: (3) 7/57 |
| Question 28: Two identical point masses P and Q, suspended from two separate massless springs of spring constants k1 and k2, espectively, oscillate vertically. If their maximum speeds are the same, the ratio (AgAp) of the amplitude Ag of mass Q to the amplitude Ap of mass P is: |
Answer: (4) |
| Question 29: The radius of Martian orbit around the Sun is about 4 time's the radius of the orbit of Mercury. The Martian year is 687 Earth days. Then which of the following is the length of 1 year on Mercury ? |
Answer: (1) 88 earth days |
| Question 30: An oxygen cylinder of volume 30 litre has 18.20 moles of oxygen. After some oxygen is withdrawn from the cylinder, its gauge pressure drops to 11 atmospheric pressure at temperature 27C. The mass of the oxygen withdrawn from the cylinder is nearly equal to: | Answer: (3) 0.116 kg |
| Question 31: De-Broglie wavelength of an electron orbiting in the n = 2 state of hydrogen atom is close to (Given Bohr radius = 0.052 nm) | Answer: (2) 0.67 nm |
| Question 32: A photon and an electron (mass m) have the same energy E. ... | Answer: (4) |
| Question 33: The electric field in a plane electromagnetic wave is given by 10 Ez=60cos (5x+1.5×10°t)V /m. Then expression for the corresponding magnetic field is (here subscripts denote the direction of the field) : | Answer: (1) By=2x10-7 cos (5x+1.5×109t)T |
| Questiom 34: An electric dipole with dipole moment 5.× 10-6 Cm is aligned with the direction of a uniform electric field of magnitude 4 × 105 N/C. The dipole is then rotated through an angle of 60° with respect to the electric field. The change in the potential energy of the dipole is : |
Answer: (2) 1.0 J |
| Question 35: A body weighs 48 N on the surface of the earth. The gravitational force experienced by the body due to the earth at a height equal to one-third the radius of the earth from its surface is : |
Answer: (2) 27 N |
| Question 36: The intensity of transmitted light when a polaroid sheet, placed between two crossed polaroids at 22.5° from the polarization axis of one of the polaroid, is (Io is the intensity of polarised light after passing through the first polaroid): |
Answer: (3) |
| Question 37: Consider a water tank shown in the figure. L and can be taken to be very widep in the z direction. When filled with a liquid of surface tension S and density p, the liquid surface makes angle.. | Answer: (2) |
| Question 38: A parallel plate capacitor made of circular plates is being charged such that the surface charge density on its plates is increasing at a constant rate with time. The magnetic field arising due to displacement current is : |
Answer: (3) non-zero everywhere with maximum at the imaginary cylindrical surface connecting peripheries of the plates |
| Question 39: The plates of a parallel plate capacitor are separated by d. Two slabs of different dielectric d constant K1 and K2 with thickness d and , 2' respectively are inserted in the capacitor. Due to this, the capacitance becomes two times larger than when there is nothing between the plates.If K1 = 1.25 K2, the value of K is : |
Answer: (1) 2.66 |
| Question 40: A particle of mass m is moving around the origin with a constant force F pulling it towards the origin. If Bohr model is used to describe its motion, the radius r of the nth orbit and the particle's speed v in the orbit depend on n as |
Answer: (3) |
| Question 41: A physical quantity P is related to four observations a, b, c and d as follows: | Answer: (3) 13% |
| Question 42: The Sun rotates around its centre once in 27 days. What will be the period of revolution if the Sun were to expand to twice its present radius without any external influence? Assume the Sun to be a sphere of uniform density. |
Answer: (4) 108 days |
| Question 43: A model for quantized motion of an electron in a uniform magnetic field B states that the flux passing through the orbit of the electron is n(hle) where n is an integer, h is Planck's constant and e is the magnitude of electron's charge. According to the model, the magnetic moment of an electron in its lowest energy state will be (m is the mass of the electron) |
Answer: (4) |
| Question 44: A model for quantized motion of an electron in a uniform magnetic field B states that the flux passing through the orbit of the electron is n(hle) where n is an integer, h is Planck's constant and e is the magnitude of electron's charge. According to the model, the magnetic moment of an electron in its lowest energy state will be (m is the mass of the electron) |
Answer: (2) |
| Question 45: In an oscillating spring mass system, a spring is connected to a box filled with sand. As the box oscillates, sand leaks slowly out of the box vertically so that the average frequency w(1) and average amplitude A(1) of the system change with time t. Which one of the following options schematically depicts these changes correctly? |
Answer: (2) |
The NEET Physics Answer Key 2025 available here is completely unofficial and is prepared by the subject experts. Any errors/discrepancies in the answer key are deeply regretted, and candidates must use this NEET Physics 2025 answer key only for their personal reference.
NTA will release the NEET Provisional Answer Key 2025 in May 2025. Candidates will be allowed to raise objections against the provisional answer key. NTA will also release the NEET UG Response Sheet 2025 for candidates' reference. Visit the official website of NTA for more updates on the NEET UG Examination 2025.
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