Physics · Class 12 Science

Jammu Kashmir Jkbose 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: 9
Total Papers: 9
Real Board Papers: 0
Sample papers: 264
Real-paper Q & A: 0
Sample-paper Q & A

Real board-paper questions available, by year

31 Q2026complete

31 Q2025complete

31 Q2024complete

26 Q2023complete

29 Q2022complete

26 Q2021complete

30 Q2020complete

30 Q2019complete

30 Q2018complete

JKBOSE Class 12 Annual Regular Examination 2026 · Set SZ

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: 31
Duration: 180 min
Sections: 4

The marks / questions / duration above are the official exam pattern. We currently have 31 of this paper’s questions (100% of the full paper), with 31 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	mcq	10	1	10
BSection B	subjective	9	2	18
CSection C	subjective	9	3	27
DSection D	subjective	3	5	15
Total		31		70

The question paper

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

Board Examination

Physics

JKBOSE Class 12 Annual Regular Examination 2026 · Set SZ

Series/Set: SZRoll No. ________

Time Allowed: 3 hoursMaximum Marks: 70

General Instructions

This question paper contains 31 questions divided into 4 sections — A, B, C, D.
Section A comprises 10 questions of 1 mark each (mcq).
Section B comprises 9 questions of 2 marks each (subjective).
Section C comprises 9 questions of 3 marks each (subjective).
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

mcq · 1 mark each · 10 of 10 shown

Q1.

The S.I Unit of electric flux is

(a) N-m^2/C
(b) Volt-metre
(c) Both of them
(d) None of them

[1]

Q2.

The magnetic force on a moving charge is maximum when angle between velocity vector and magnetic field is

(a) 0 degree
(b) pi
(c) 2 pi
(d) pi/2

[1]

Q3.

The inductance of a coil is directly proportional to

(a) Length
(b) Number of turns of coil
(c) Resistance of coil
(d) Square of number of turns of coil

[1]

Q4.

Henry is the S.I Unit of

(a) Self-Inductance
(b) Mutual Inductance
(c) Both of them
(d) None of them

[1]

Q5.

The image formed by the objective of a compound microscope is

(a) Real, inverted
(b) Virtual, erect
(c) Virtual, inverted
(d) Real, erect

[1]

Q6.

What is the number of electrons in the nucleus of 92U^235?

(a) Zero
(b) 92
(c) 143
(d) 235

[1]

Q7.

Atomic radius depends upon the mass number A as

(a) A^0
(b) A^1
(c) A^3
(d) A^1/3

[1]

Page 1 of 5

Q8.

Lyman series lies in which of the following region of spectrum (a) Ultra Violet (b) Visible (c) Infra-Red (d) None of them

[1]

Q9.

N-type extrinsic semi-conductor is (a) Negatively charged (b) Positively charged (c) Electrically neutral (d) Pure semi-conductor

[1]

Q10.

The energy gap of Silicon is (a) 1.1eV (b) 1.1meV (c) 0.76eV (d) 0.76meV

[1]

Section B

subjective · 2 marks each · 9 of 9 shown

Q1.

A wire of resistance 5 ohm is stretched to double its original length, what is its new resistance?

[2]

Q2.

Define resistance and resistivity. Write their S.I Units.

[2]

Q3.

Define mean value of alternating current. Write the expression for mean value of a.c over a half cycle.

[2]

Q4.

A capacitor of capacitance 1 microF is connected to 50Hz a.c source. Find its capacitive reactance.

[2]

Q5.

Define total internal reflection of light. Write the two conditions necessary for total internal reflection of light.

[2]

Q6.

Define work function and threshold frequency. Give their S.I. Units.

[2]

Page 2 of 5

Q7.

Find the de Broglie wavelength of an electron accelerated through a potential difference of 100 eV.

[2]

Q8.

Give two points of difference between nuclear fission and nuclear fusion.

[2]

Q9.

Give four points of difference/similarity between p-type and n-type semi-conductor.

[2]

Section C

subjective · 3 marks each · 9 of 9 shown

Q1.

Find the charge and energy stored in a capacitor of 5 microF connected to a 50V source.

[3]

Q2.

State and explain Kirchhoff's laws.

[3]

Q3.

Give three properties of diamagnetic, para magnetic and ferro magnetic substance.

[3]

Q4.

State and explain Faraday's laws of electromagnetic induction.

[3]

Page 3 of 5

Q5.

Give six properties of electromagnetic waves.

[3]

Q6.

A ray of light suffers minimum deviation while passing through a prism of refractive index 1.5 and refraction angle of 60 degree. Find the angle of minimum deviation and angle of incidence.

[3]

Q7.

What are coherent sources? Write four conditions for obtaining sustained interference of light.

[3]

Q8.

Give three properties each of alpha, beta and gamma rays.

[3]

Q9.

What is rectifier? How is Pn-junction diode used as a full wave rectifier?

[3]

Section D

subjective · 5 marks each · 3 of 3 shown

Q1.

State Gauss's law of electrostatistics. Find an expression for electric field due to infinitely long straight wire. **OR** Find an expression for the capacitance of a parallel plate capacitor in presence of dielectric slab between its plates.

[5]

Page 4 of 5

Q2.

State Biot Savart's law. Derive an expression for the magnetic field at the centre of circular coil carrying current. **OR** Give the principle, construction and working of moving coil galvanometer.

[5]

Q3.

What is Lens Maker's formula? Derive an expression for Lens Maker's formula for a convex lens. **OR** State Huygen's Principle. Derive laws of reflection from Huygen's Principle.

[5]

Page 5 of 5