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Physics · Class 12 Science

Assam Ahsec Class 12 Physics — Real Previous-Year Papers

with complete answers

Real previous-year board papers, year by year — the official exam pattern, the full question paper, and every question solved the concept-first way. Distinct from the chapter-wise textbook bank.

2018–2026
Years of papers
8
Total Papers
8
Real Board Papers
0
Sample papers
300
Real-paper Q & A
0
Sample-paper Q & A

Real board-paper questions available, by year

—2026Paper not yet available
46 Q2025complete
38 Q2024complete
36 Q2023complete
36 Q2022complete
—2021Exam cancelled (COVID-19)
30 Q2020complete
34 Q2019complete
34 Q2018complete

2026 — Paper not yet available: This year’s exam was held, but neither AHSEC’s official site nor any source we check has published the question paper yet. We publish only a paper we can verify against a real printed original — this one will appear here once it is.

2021 — Exam cancelled (COVID-19): AHSEC cancelled the HS Final (Class-12) examination in 2021 due to COVID-19; no annual question paper was conducted or printed that year, so none exists to publish. Results were declared using a formula based on HSLC marks, institutional practicals, and internal assessment.

AHSEC Higher Secondary (HS) Final Examination 2026 · Set ANNUAL

Real board examination

About this paper

The real Class-12 board examination held in 2026. Every question below is solved the concept-first way. Sample papers are labelled honestly — never shown as a past exam.

Total marks
70
Questions
30
Duration
180 min
Sections
4

The marks / questions / duration above are the official exam pattern. We currently have 46 of this paper’s questions (153% of the full paper), with 46 fully solved. Questions we couldn’t yet extract or verify are held — never shown as complete.

Sections & marks

SectionTypeQuestionsMarks eachTotal
ASection Asubjective818
BSection Bsubjective10220
CSection Csubjective9327
DSection Dsubjective3515
Total3070

The question paper

The questions we hold for this paper, laid out by section. Solutions are on the Answers tab.

Board Examination

Physics

AHSEC Higher Secondary (HS) Final Examination 2026 · Set ANNUAL

Series/Set: ANNUALRoll No. ________
Time Allowed: 3 hoursMaximum Marks: 70

General Instructions

  1. This question paper contains 30 questions divided into 4 sections — A, B, C, D.
  2. Section A comprises 8 questions of 1 mark each (subjective).
  3. Section B comprises 10 questions of 2 marks each (subjective).
  4. Section C comprises 9 questions of 3 marks each (subjective).
  5. Section D comprises 3 questions of 5 marks each (subjective).

Above is the official exam pattern. The questions printed below are those we currently hold for this paper.

Section A

subjective · 1 mark each · 15 of 8 shown

Q1.
Mention any one of the basic properties of electric charge.
[1]
Q2.
Give two examples of polar molecules.
[1]
Q3.
To drive a device of power P and voltage V, the power wastage in the connecting wire is proportional to (Choose the correct one)
  • (i) V^2
  • (ii) 1/V^2
[1]
Q4.
What is the potential difference between A and B in the circuit?
[1]
Q5.
What do you mean by current sensitivity of a galvanometer?
[1]
Q6.
The phenomenon of perfect diamagnetism in superconductor is called ____. (Fill up the gap)
[1]
Q7.
At resonant frequency, the total impedance of a series L-C-R circuit is ____. (Fill up the gap)
[1]
Page 1 of 7
Q8.
A bar magnet is brought near a coil as shown in the figure. What would be the direction of induced current in the coil, if you look at the coil from the side of the magnet?
[1]
Q9.
The critical angles for glass (μg = 1.5), water (μw = 1.33) and diamond (μD = 2.42) are θg, θw and θD respectively. Arrange the angles in descending order.
[1]
Q10.
Write the dimensional formula for 1/√(μ₀ε₀).
[1]
Q11.
What is the shape of the wavefront diverging from a point source?
[1]
Q12.
What is the name of light particle? What physical quantity determines the energy of a light particle?
[1]
Q13.
In Rutherford's α-scattering experiment, for what value of scattering angle, the impact parameter becomes minimum?
[1]
Q14.
Write a difference between nuclear fission and nuclear fusion.
[1]
Q15.
In extrinsic semiconductor doped with pentavalent impurity, __ become majority carriers and __ the minority carriers. (Fill up the gaps)
[1]
Section B

subjective · 2 marks each · 15 of 10 shown

Q1.
Write Coulomb's law in vector form and define 1 coulomb charge.
[2]
Page 2 of 7
Q2.
A comb running through one's dry hair attracts small bits of paper. Why? What happens if the hair is wet?
[2]
Q3.
Plot a graph showing the variation of current with voltage for the material GaAs. On the graph, mark the region where (i) resistance is negative and (ii) Ohm's law is obeyed.
[2]
Q4.
The resistance of a wire of length 15 m and uniform cross-section 6.0 × 10^-7 m² is measured to be 5.0 Ω. What is the resistivity of the material of the wire?
[2]
Q5.
Two long and parallel conductors A and B are carrying currents 8.0 A and 5.0 A in the same direction. A and B are separated by a distance of 4.0 cm. Calculate the force on a length of 1 cm of wire A.
[2]
Q6.
What is magnetic susceptibility χ? Of two metals P and Q, it is found that χP ≫ 1 and −1 ≤ χQ < 0. Name the types of material to which metals P and Q belong.
[2]
Q7.
A square loop of side 10 cm and resistance 0.5 Ω is placed vertically in the east-west plane. A uniform magnetic field of 0.10 T is set up across the plane in the north-east direction. The magnetic field is decreased to zero in 0.7 s at a steady rate. Determine the magnitude of the induced e.m.f.
[2]
Q8.
A 15.0 μF capacitor is connected to a 220 V, 50 Hz source. Find the capacitive reactance in the circuit.
[2]
Q9.
A plane electromagnetic wave travels in vacuum along z-direction. What can you say about the direction of its electric field vector E and magnetic field vector B? What physical quantity of the wave is equal to |E|/|B|?
[2]
Page 3 of 7
Q10.
Double convex lenses are to be manufactured from a glass of refractive index 1.50 with both faces of the same radius of curvature. What is the radius of curvature if the focal length is to be 20 cm?
[2]
Q11.
Draw a neat ray diagram of formation of image by a refracting telescope. If fe = 1 cm, fo = 100 cm, what is the magnification of the telescope?
[2]
Q12.
Monochromatic light of wavelength 589 nm is incident from air on a water surface. Calculate the wavelength and frequency of (i) reflected and (ii) refracted light. The refractive index of water is μ = 1.33.
[2]
Q13.
The photoelectric cutoff voltage in a certain experiment is 1.5 V. What is the maximum kinetic energy of photoelectrons emitted?
[2]
Q14.
Write two limitations of Bohr model of hydrogen atom.
[2]
Q15.
Write True or False: (i) An intrinsic semiconductor behaves as a conductor at 0 K. (ii) In intrinsic semiconductor, ne = nh = nᵢ. (iii) For p-type semiconductor, ne > nh. (iv) In a semiconductor in thermal equilibrium, nh ne = nᵢ².
[2]
Section C

subjective · 3 marks each · 9 of 9 shown

Q1.
A cube of side 0.1 m is placed as shown in the figure in a region, where electric field E = 10x î. Here x is in metres and E is in N-C^-1. Calculate (i) the flux passing through the cube and (ii) the charge within the cube.
[3]
Page 4 of 7
Q2.
Draw a neat diagram of Wheatstone bridge. Obtain the necessary condition under which the Wheatstone bridge is balanced.
[3]
Q3.
A charged particle with velocity v enters normally into a uniform magnetic field B. The charged particle describes a circular path. Explain. Show that the radius of the circular path is r = mv/Bq, where m = mass of the particle, q = charge of the particle.
[3]
Q4.
Draw a ray diagram showing the formation of a real image of an object by a concave mirror and establish the mirror equation.
[3]
Q5.
Under what condition, two sources are said to be coherent? Waves of wavelength λ coming from two coherent sources S₁ and S₂ meet at a point P. If S₁P ~ S₂P = Δ, write the conditions for (i) constructive interference and (ii) destructive interference at P.
[3]
Q6.
What is work function of a metal? The work function for certain metal is 4.2 eV. Is it possible to exhibit photoelectric emission if an incident light of wavelength 330 nm falls on that metal?
[3]
Q7.
What is mutual inductance? Two concentric circular coils, one of small radius r₁ and the other of large radius r₂ such that r₁ ≪ r₂, are placed coaxially with centres coinciding. Obtain the mutual inductance of the arrangement.
[3]
Page 5 of 7
Q8.
Who proposed the first model of atom in 1898? The ground state energy of hydrogen atom is −13.6 eV. What are the energies for n = 2 and n = 3 excited states of hydrogen atom? Given that Eₙ = −me⁴/(8n²ε₀²h²), where the symbols have their usual meanings.
[3]
Q9.
Classify conductors, semiconductors and insulators on the basis of energy bands, and give one example of each.
[3]
Section D

subjective · 5 marks each · 7 of 3 shown

Q1.
What is electrostatic potential? Derive an expression for the total potential at a point situated at a distance r from the centre of an electric dipole as V = (1/4πε₀)(p·r̂ / r²) (r ≫ a), where p = dipole moment.
[5]
Q2.
From the following figure, show that I = V(R₂ + R₃) / (R₁R₂ + R₁R₃ + R₂R₃).
[5]
Q3.
Write Biot-Savart law in vector form. Apply this law to derive an expression for magnetic field at a point on the axis of a circular current loop situated at a distance x from its centre.
[5]
Page 6 of 7
Q4.
(i) Describe an experiment that can show the production of electromagnetic induction. (ii) Write Faraday's law of electromagnetic induction. (iii) Write the mathematical expression for induced e.m.f. How would you indicate the direction of induced e.m.f.?
[5]
Q5.
Using Huygens' principle, discuss either the phenomenon of reflection or the phenomenon of refraction.
[5]
Q6.
What is p-n junction? Explain with diagram a p-n junction diode (i) under forward bias and (ii) under reverse bias.
[5]
Q7.
Write short notes on (any two): (i) Electromagnetic spectrum (ii) Optical fibre (iii) Einstein's photoelectric equation (iv) Nuclear binding energy.
[5]
Page 7 of 7