Physics · Class 12 Science

Tamil Nadu Dge 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.

2017–2026
Years of papers: 9
Total Papers: 9
Real Board Papers: 0
Sample papers: 406
Real-paper Q & A: 0
Sample-paper Q & A

Real board-paper questions available, by year

38 Q2026complete

38 Q2025complete

38 Q2024complete

38 Q2023complete

38 Q2022complete

—2021Not available

38 Q2020complete

38 Q2019complete

70 Q2018complete

70 Q2017complete

Tamil Nadu HSC (DGE) 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: 70
Questions: 38
Duration: 180 min
Sections: 4

The marks / questions / duration above are the official exam pattern. We currently have 38 of this paper’s questions (100% of the full paper), with 38 fully solved. Questions we couldn’t yet extract or verify are held — never shown as complete.

Sections & marks

Section	Type	Questions	Marks each	Total
ASection A	compulsory	15	1	15
BSection B	choice	9	2	18
CSection C	choice	9	3	27
DSection D	compulsory	5	5	25
Total		38		70

The question paper

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

Board Examination

Physics

Tamil Nadu HSC (DGE) Board 2026 · Set ANNUAL

Series/Set: ANNUALRoll No. ________

Time Allowed: 3 hoursMaximum Marks: 70

General Instructions

This question paper contains 38 questions divided into 4 sections — A, B, C, D.
Section A comprises 15 questions of 1 mark each (compulsory).
Section B comprises 9 questions of 2 marks each (choice).
Section C comprises 9 questions of 3 marks each (choice).
Section D comprises 5 questions of 5 marks each (compulsory).

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

Section A

compulsory · 1 mark each · 15 of 15 shown

Q1.

Two identical conducting balls having positive charges

q_1

and

q_2

are separated by a centre to centre distance r. If they are made to touch each other and then separated to the same distance, the force between them will be :

(a) zero
(b) less than before
(c) more than before
(d) same as before

[1]

Q2.

Two wires A and B with circular cross section are made up of the same material with equal lengths. Suppose

R_A = 3R_B

, then what is the ratio of radius of wire A to that of B ?

(a) $\dfrac{1}{\sqrt{3}}$
(b) 3
(c) $\dfrac{1}{3}$
(d) $\sqrt{3}$

[1]

Q3.

A non conducting charged ring carrying a charge of q, mass m and radius r is rotated about its axis with constant angular speed

\omega

. The ratio of its magnetic moment with angular momentum is :

(a) $\dfrac{2q}{m}$
(b) $\dfrac{q}{2m}$
(c) $\dfrac{q}{4m}$
(d) $\dfrac{q}{m}$

[1]

Q4.

When the current changes from

+2

A to

-2

A in 0.05 s, an emf of 8 V is induced in a coil. The coefficient of self induction of the coil is :

(a) 0.4 H
(b) 0.2 H
(c) 0.8 H
(d) 0.1 H

[1]

Q5.

Which one of them is used to produce a propagating electromagnetic wave ?

(a) a charge moving with constant velocity
(b) an accelerating charge
(c) a stationary charge particle
(d) an uncharged particle

[1]

Page 1 of 6

Q6.

The speed of light in an isotropic medium depends on : (a) the nature of propagation (b) its intensity (c) the motion of the source with respect to medium (d) its wavelength

[1]

Q7.

In a Young's double-slit experiment, the slit separation is doubled. To maintain the same fringe spacing on the screen, the screen-to-slit distance D must be changed to : (a) √(2)D (b) (D)/(2) (c) dfracD√(2) (d) 2D

[1]

Q8.

Emission of electrons by the absorption of heat energy is called ____ emission. (a) field (b) thermionic (c) photoelectric (d) secondary

[1]

Q9.

The mass of a ⁷₃Li nucleus is 0.042 u less than the sum of the masses of all its nucleons. The average binding energy per nucleon of ⁷₃Li nucleus is nearly : (a) 23 MeV (b) 46 MeV (c) 5.6 MeV (d) 3.9 MeV

[1]

Q10.

The principle based on which a solar cell operates is : (a) Photovoltaic action (b) Diffusion (c) Carrier flow (d) Recombination

[1]

Q11.

The particle which gives mass to protons and neutrons are : (a) Nano particle (b) Higgs particle (c) Bulk particle (d) Einstein particle

[1]

Q12.

The potential energy of a magnetic dipole whose dipole moment is vecpm = (-0.5hati + 0.4hatj)Am² kept in uniform magnetic field vecB = 2hatjT : (a) 0.1 J (b) −0.1 J (c) 0.8 J (d) −0.8 J

[1]

Q13.

Which of the following statement is/are true for equipotential surface ? (a) The potential is different for different equipotential surfaces. (b) Electric field must always be normal to equipotential surface. (c) Work done to move a charge between any two points is zero. (d) All of the above

[1]

Q14.

Inside the calcite crystal, along the optic axis, the ratio of velocities of extraordinary ray to ordinary ray is : (a) 2 : 1 (b) 1 : 1.5 (c) 1 : 2 (d) 1 : 1

[1]

Q15.

The range of the antenna is 64 km, then its height is (Radius of the earth is 6400 km) : (a) 32 m (b) 0.32 km (c) 640 m (d) 32 km

[1]

Page 2 of 6

Section B

choice · 2 marks each · 9 of 9 shown

Q1.

Define electric field.

[2]

Q2.

State Joule's law of heating.

[2]

Q3.

Mention the ways of producing induced emf.

[2]

Q4.

Give any two uses of microwaves.

[2]

Q5.

If the focal length is 150 cm for a lens, what is the power of a lens ?

[2]

Q6.

What are matter waves ?

[2]

Q7.

Write the properties of cathode rays. (any two)

[2]

Q8.

Draw the schematic circuit diagram for a NPN transistor in common emitter configuration.

[2]

Page 3 of 6

Q9.

Light of wavelength of 5000 Å produces diffraction pattern of the single slit of width 5 μm. What is the maximum order of diffraction possible ?

[2]

Section C

choice · 3 marks each · 9 of 9 shown

Q1.

Write the applications of capacitors.

[3]

Q2.

Two resistors when connected in series and parallel, their equivalent resistances are 15 Ω and (56)/(15)Ω respectively. Find the values of the resistances.

[3]

Q3.

Define the current sensitivity of a galvanometer and how it can be increased ?

[3]

Q4.

Obtain an expression for average power of AC over a cycle.

[3]

Q5.

What is Critical angle ? Obtain the equation for Critical angle.

[3]

Q6.

Mention the differences between Interference and Diffraction.

[3]

Page 4 of 6

Q7.

Show that nuclear density is almost constant for nuclei with Z >10.

[3]

Q8.

Give the circuit symbol, logical operation, truth table and Boolean expression of AND gate.

[3]

Q9.

When a light of frequency 9 × 10¹⁴ Hz is incident on a metal surface, photoelectrons are emitted with a maximum speed of 8.14 × 10⁵ms⁻¹. Determine the threshold frequency of the surface.

[3]

Section D

compulsory · 5 marks each · 5 of 5 shown

Q1.

Derive an expression for electrostatic potential due to an electric dipole. **OR** What is Fibre Optic Communication ? Write its merits and demerits.

[5]

Q2.

Explain the determination of unknown resistance using meter bridge. **OR** List out the laws of photoelectric effect.

[5]

Page 5 of 6

Q3.

Write down Maxwell equations in integral form. **OR** Derive the equation for angle of deviation produced by a prism.

[5]

Q4.

Explain the working of cyclotron in detail. **OR** (i) What are Polariser and Analyser ? (ii) List the uses of Polaroids.

[5]

Q5.

(i) What is binding energy of a nucleus ? Write its expression. (ii) Compute the binding energy of ⁴₂He nucleus using the following data : Atomic mass of Helium atom, MA(He) = 4.00260 u, Mass of hydrogen atom, mH = 1.00785 u, and Mass of neutron, mₙ = 1.008665 u. **OR** (i) Write about impedance of the series RLC circuit. (ii) Find the impedance of a series RLC circuit if the inductive reactance, capacitive reactance and resistance are 184 Ω, 144 Ω and 30 Ω respectively. Also calculate the phase angle between voltage and current.

[5]

Page 6 of 6