NEET 2026 Physics - Solved Answer Key

1. A 100-turn closely wound circular coil of radius 5 cm has a magnetic field of 3.14 × 10⁻³ T at its centre. The current flowing through the coil, and the magnitude of the magnetic moment of this coil are, respectively: (Take μ₀ = 4π × 10⁻⁷ T m/A)

(1) 2.5 A, 2 A m²

(2) 2.5 A, 20 A m²

(3) 2 A, 4 A m²

(4) 2 A, 10 A m²

✓ Correct Answer: Option (1) — 2.5 A, 2 A m²

2. Match List I with List II (Quantum Physics):

A. E=hν | B. Diffraction | C. λ=h/p | D. Compton effect

(1) A-IV, B-III, C-I, D-II

(2) A-I, B-IV, C-III, D-II

(3) A-IV, B-I, C-II, D-III

(4) A-IV, B-III, C-II, D-I

✓ Correct Answer: Option (1) — A-IV (Energy of photon), B-III (Wave nature), C-I (de Broglie), D-II (Particle nature)

4. The speed of light in vacuum is taken as unity. If light takes 6 min 40 s to reach the Earth from the Sun, the distance between the Sun and the Earth in new unit is:

(1) 3 × 10⁸

(2) 3 × 10¹⁰

(3) 400

(4) 500

✓ Correct Answer: Option (3) — 400

6. In a vernier callipers, 20 VSD coincide with 16 MSD (each division of length 1 mm). The least count of the vernier callipers is:

(1) 0.01 cm

(2) 0.1 cm

(3) 0.02 cm

(4) 0.2 cm

✓ Correct Answer: Option (3) — 0.02 cm

NEET 2026 Physics - Part 2 (Solved)

7. An ac circuit contains a resistance of 1 kΩ, a capacitor of 0.1 µF and an inductor of 1 mH connected in series. The resonance frequency of the circuit is approximately:

(1) 10.1 kHz

(2) 20.7 kHz

(3) 15.9 kHz

(4) 13.5 kHz

✓ Correct Answer: Option (3) — 15.9 kHz

8. The plot which correctly represents the variation of magnetic field (B) with distance (r) from the axis of a long straight solid wire of circular cross-section of radius 'a' carrying steady current I:

[Graph Description: B increases linearly inside (r < a) and decreases hyperbolically outside (r > a)]

(1) Linear then Hyperbolic (Correct Plot)

(2) Decreasing Curve

(3) Constant then Decreasing

(4) Discontinuous Plot

✓ Correct Answer: Option (1) — The first graph showing B ∝ r inside and B ∝ 1/r outside.

9. A uniform metallic wire having resistance 4 Ω is bent to form a square loop (ABCD). A resistance of 2 Ω is connected between points B and D and a battery of 2 V is connected across points A and C. The value of current (I) is:

(1) 2 A

(2) 4 A

(3) 8 A

(4) 4.5 A

✓ Correct Answer: Option (1) — 2 A

10. An unknown nucleus has a nuclear density of 2.29 × 10¹⁷ kg/m³ and mass of 19.926 × 10⁻²⁷ kg. Its mass number A is approximately: (Take R₀ = 1.2 × 10⁻¹⁵ m)

(1) 12

(2) 19

(3) 20

(4) 16

✓ Correct Answer: Option (1) — 12

12. A galvanometer of resistance 100 Ω gives full scale deflection for a current of 1 mA. It is converted into an ammeter of range 0 - 10 A. The shunt required is:

(1) 0.01 Ω

(2) 0.10 Ω

(3) 0.001 Ω

(4) 1.0 Ω

✓ Correct Answer: Option (1) — 0.01 Ω

NEET 2026 Physics - Part 3 (Solved)

13. In Young's double slit experiment, using monochromatic light of wavelength λ, the intensity of light at a point on the screen where the path difference is λ is K units. The intensity of light at a point where the path difference is λ/3 will be:

(1) K/4

(2) K

(3) K/2

(4) 2 K

✓ Correct Answer: Option (1) — K/4

14. The magnitude and direction of the acceleration produced in a body of mass 5 kg when two mutually perpendicular forces 8 N and 6 N act on it, are respectively:

(1) 2 m s⁻², tan⁻¹(3/4) with 6 N

(2) 2 m s⁻², tan⁻¹(4/3) with 8 N

(3) 2 m s⁻², tan⁻¹(3/4) with 8 N

(4) 20 m s⁻², tan⁻¹(4/3) with 8 N

✓ Correct Answer: Option (3) — 2 m s⁻², tan⁻¹(3/4) with 8 N force

15. Five capacitors of capacitances C₁=C₂=C₃=C₄= 10 µF and C₅= 2.5 µF are connected as shown (Bridge circuit), with a battery of 50 V. The equivalent capacitance and charges on each capacitor respectively are:

(1) 5 µF, 125 µC on all

(2) 5 µF, 250 µC on all

(3) 4 µF, 250 µC on C₁ to C₄

(4) 5 µF, 125 µC on C₁ to C₄

✓ Correct Answer: Option (1) — 5 µF, 125 µC on all capacitors

17. The power of a crane, which lifts a mass of 1000 kg to a height of 20 m in 10 s is: (g = 9.8 m/s²)

(1) 19.6 W

(2) 39.2 W

(3) 39.2 kW

(4) 19.6 kW

✓ Correct Answer: Option (4) — 19.6 kW

18. Match List I (Elasticity) with List II (Formulae):

A. Young's Modulus | B. Compressibility | C. Bulk Modulus | D. Poisson's Ratio

(1) A-I, B-IV, C-III, D-II

(2) A-IV, B-I, C-II, D-III

(3) A-III, B-II, C-I, D-IV

(4) A-II, B-III, C-IV, D-I

✓ Correct Answer: Option (4) — A-II, B-III, C-IV, D-I

NEET 2026 Physics - Final Section

19. In a concave lens, a ray of light emanating from the object parallel to the principal axis of the lens, after refraction:

(1) emerges parallel to the principal axis

(2) appears to diverge from the first principal focus

(3) passes through 2F

(4) passes through the second principal focus

✓ Correct Answer: Option (2) — Appears to diverge from the first principal focus.

20. A thin wire of length 'L' and linear mass density 'm' is bent into a circular ring (in x-y plane) with centre 'C'. The moment of inertia of the ring about an axis yy' will be:

(1) 3 mL³ / 8π²

(2) 3 mL³ / 8π

(3) 3 mL² / 8π²

(4) 3 mL² / 8π

✓ Correct Answer: Option (1) — 3 mL³ / 8π²

22. For a travelling harmonic wave y(x, t) = 2.0 cos 2π(10 t - 0.0080 x + 0.35), the phase difference between oscillatory motion of two points separated by a distance of 0.5 m is:

(1) 8π rad

(2) 0.08π rad

(3) 0.008π rad

(4) 0.8π rad

✓ Correct Answer: Option (4) — 0.8π rad

23. A ray of monochromatic light is passing through an equilateral prism (ABC). The refracted ray (QR) is parallel to its base (BC) and the angle of incidence (i) is 50°. The angle of deviation (δ) is:

(1) 40°

(2) 45°

(3) 55°

(4) 35°

✓ Correct Answer: Option (1) — 40°