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Physics · Class 12 Science

Kerala Dhse 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.

2013–2026
Years of papers
14
Total Papers
14
Real Board Papers
0
Sample papers
361
Real-paper Q & A
0
Sample-paper Q & A

Real board-paper questions available, by year

29 Q2026complete
29 Q2025complete
29 Q2024complete
29 Q2023complete
36 Q2022complete
45 Q2021complete
30 Q2020complete
26 Q2019complete
25 Q2018complete
19 Q2017complete
15 Q2016complete
17 Q2015complete
17 Q2014complete
15 Q2013complete

Kerala DHSE Plus Two Board 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
60
Questions
29
Duration
120 min
Sections
5

The marks / questions / duration above are the official exam pattern. We currently have 29 of this paper’s questions (100% of the full paper), with 29 fully solved. Questions we couldn’t yet extract or verify are held — never shown as complete.

Sections & marks

SectionTypeQuestionsMarks eachTotal
ASection Achoice717
BSection Bchoice7214
CSection Cchoice7321
DSection Dchoice4416
ESection Echoice4520
Total2960

The question paper

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

Board Examination

Physics

Kerala DHSE Plus Two Board 2026 · Set ANNUAL

Series/Set: ANNUALRoll No. ________
Time Allowed: 2 hoursMaximum Marks: 60

General Instructions

  1. This question paper contains 29 questions divided into 5 sections — A, B, C, D, E.
  2. Section A comprises 7 questions of 1 mark each (choice).
  3. Section B comprises 7 questions of 2 marks each (choice).
  4. Section C comprises 7 questions of 3 marks each (choice).
  5. Section D comprises 4 questions of 4 marks each (choice).
  6. Section E comprises 4 questions of 5 marks each (choice).

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

Section A

choice · 1 mark each · 7 of 7 shown

Q1.
The capacitance of a parallel plate capacitor ________ (increases/decreases) when a dielectric is inserted between the plates.
[1]
Q2.
Which one of the following is not ferromagnetic?
  • (a) Cobalt
  • (b) Iron
  • (c) Nickel
  • (d) Bismuth
[1]
Q3.
Identify the constituent radiation of electromagnetic spectrum which is used in medicine to destroy cancer cells.
  • (a) X-rays
  • (b) UV rays
  • (c) IR rays
  • (d) Gamma rays
[1]
Q4.
The optical density of turpentine is higher than that of water while its mass density is lower. Figure shows a layer of turpentine floating over water in a container. Which of the following four rays incident on turpentine in figure, the path shown is correct?
  • (a) 1
  • (b) 2
  • (c) 3
  • (d) 4
[1]
Q5.
The perpendicular distance of the initial velocity vector of α-particle from the centre of the nucleus is termed as ________.
[1]
Q6.
The nucleus is approximately spherical in shape. Then the surface area of nucleus having mass number A varies as ____.
  • (a) A^2/3
  • (b) A^4/3
  • (c) A^1/3
  • (d) A^5/3
[1]
Page 1 of 5
Q7.
A pure semiconductor when doped with a pentavalent impurity becomes a p-type semiconductor. (True/False)
[1]
Section B

choice · 2 marks each · 7 of 7 shown

Q1.
Arrive at an expression for torque on a rectangular current loop in a uniform magnetic field.
[2]
Q2.
(a) State Lenz's law. (1) (b) Predict the polarity of the capacitor in the situation described by the figure. (1)
[2]
Q3.
List out ANY FOUR energy losses in transformers.
[2]
Q4.
(a) Define displacement current. (1) (b) Give Maxwell's modified form of Ampere's circuital law. (1)
[2]
Q5.
(a) Define coherent sources. (1) (b) Write the path difference between two coherent waves for each: (1) (i) constructive interference (ii) destructive interference
[2]
Q6.
Arrive at the quantum condition proposed in second postulate of Bohr's atom model using de Broglie's equation.
[2]
Q7.
Complete the following table using the words same or different: (table with columns Nuclide | Z (atomic number) | A (mass number) | N (neutron number); row 'Isotope': Z = Same, A = __, N = __; row 'Isotone': Z = different, A = __, N = __)
[2]
Page 2 of 5
Section C

choice · 3 marks each · 7 of 7 shown

Q1.
(a) An electric dipole with dipole moment 4 × 10^-9 cm is aligned at 30° with the direction of a uniform electric field of magnitude 5 × 10⁴ NC^-1. Calculate the magnitude of the torque acting on the dipole. (2) (b) The maximum value of torque experienced by the dipole will be when it is aligned at an angle θ = ____. (1)
[3]
Q2.
Arrive at an expression for equivalent capacitance of 3 capacitors each with capacitances C1, C2, C3 respectively, when connected in (a) Series (1½) (b) Parallel (1½)
[3]
Q3.
Obtain the balancing condition in Wheatstone's bridge.
[3]
Q4.
(a) Define Magnetisation. (1) (b) A bar magnet made of steel has a magnetic moment of 2.5 Am² and a mass of 6.6 × 10^-3 kg. If the density of steel is 7.9 × 10³ kgm^-3, find the magnetisation of the magnet. (2)
[3]
Q5.
Arrive at Snell's law of refraction using Huygen's principle.
[3]
Q6.
(a) Give Einstein's photo electric equation. (1) (b) Draw a graph showing the variation of stopping potential with frequency. (1) (c) Slope of the above graph is ____. (1)
[3]
Page 3 of 5
Q7.
(a) With the help of a circuit diagram, explain the working of a full wave rectifier. (2) (b) How can we get a steady dc output from the pulsating output voltage of a full wave rectifier? (1)
[3]
Section D

choice · 4 marks each · 4 of 4 shown

Q1.
(a) Define electrostatic potential. (1) (b) Deduce the relation for electric potential due to an electric dipole. (3)
[4]
Q2.
(a) Arrive at a relation connecting current in a metallic conductor and the drift velocity of the conduction electron. (2) (b) A copper wire of 10^-6 m² area of cross section, carries a current of 2 A. If the number of free electrons per cubic metre in the wire is 8 × 10²8, calculate the average drift velocity of electrons. (2)
[4]
Q3.
(a) Derive an expression for self-inductance of a long solenoid of cross sectional area A, length l, having n turns per unit length. (2) (b) The self-inductance of an air core solenoid is 4.8 mH. If its core is replaced by iron core, then its self-inductance becomes 1.8 H. Find out the relative permeability of iron. (2)
[4]
Q4.
(a) A simple microscope is a ____ (converging/diverging) lens of small focal length. (1) (b) With the help of a ray diagram, arrive at an expression for (i) Linear magnification of a simple microscope when image is formed at near point of vision. (1½) (ii) Angular magnification of a simple microscope when image is formed at infinity. (1½)
[4]
Page 4 of 5
Section E

choice · 5 marks each · 4 of 4 shown

Q1.
(a) State Gauss's law in electrostatics. (1) (b) Derive an expression for the electric field due to an infinite plane sheet of charge at a point P distance r from the sheet. The sheet is charged uniformly with a surface charge density σ. (3) (c) Two large, thin metal plates are parallel and close to each other on their inner faces, the plates have equal surface charge densities. What is E (vector) in the region between the two plates? (1)
[5]
Q2.
(a) Show that the steady deflection φ produced by a moving coil galvanometer is proportional to the current flowing through it. (2) (b) Write down the expression for current sensitivity and voltage sensitivity. (2) (c) What happens to current sensitivity when number of turns of the galvanometer coil is increased? (1)
[5]
Q3.
(a) Derive an expression for impedance in a series LCR circuit and hence arrive at an expression for resonant frequency of the circuit. (3) (b) A sinusoidal voltage of peak value 283 V and frequency 50 Hz is applied to a series LCR circuit in which R = 3Ω, L = 25.48 mH and C = 796 µF. What is the frequency of the source at which resonance occurs? (2)
[5]
Q4.
(a) Derive an expression for Lens makers formula. (3) (b) Double convex lenses are to be manufactured from a glass of refractive index 1.55, with both faces of same radius of curvature. What is the radius of curvature required to get a focal length of 20 cm? (2)
[5]
Page 5 of 5