Karnataka 2nd PUC Physics Answer Key 2026 (OUT) Live Updates: Paper Moderately Easy; Solved Question Paper

02 27 PM IST - 06 Mar'26

2nd PUC Physics Key Updated: Paper Doable as per Subject Expert

Our subject expert has updated the Physics answer key of 2nd PUC on this page. The paper was doable with only a few tricky questions. Overall, fill in the blanks and MCQ questions were esily doable. 

01 00 PM IST - 06 Mar'26

Karnataka 2nd PUC Physics Exam 2026 Concluded Across All Centres

The Karnataka 2nd PUC Physics Examination 2026 has officially concluded across all examination centres as the scheduled exam time ended at 1 PM. Students have started coming out of the examination halls after submitting their answer scripts.

12 40 PM IST - 06 Mar'26

Karnataka 2nd PUC Physics Exam 2026 to Conclude Soon; Last 20 Minutes Remaining

The Karnataka 2nd PUC Physics Exam 2026 is now approaching its final stage, with only about 20 minutes remaining for the exam to conclude.

12 00 PM IST - 06 Mar'26

Paper Analysis and Unofficial Answer Key to be Available Soon

The Karnataka 2nd PUC Physics Exam 2026 is currently underway across all examination centres, and students are in the final phase of completing their answers. As the exam progresses, subject experts will prepare a detailed paper analysis and unofficial answer key based on the questions asked in the examination.

The complete exam analysis and answer key will be made available here soon, which will help students review the question paper and estimate their performance after the examination concludes.

11 00 AM IST - 06 Mar'26

Hospitality and Facilities Provided at Examination Centres for Physics Exam

As the Karnataka 2nd PUC Physics Exam 2026 continues smoothly across all centres, authorities have ensured several facilities and arrangements for students to make the examination process comfortable and hassle-free. Examination staff and invigilators have been actively assisting students and guiding them to their respective halls.

Facilities provided at exam centres include:

• Proper seating arrangements and ventilation in examination halls

• Drinking water facilities available for students

• Clear display of seating charts and hall numbers

• Assistance desks to help students locate their rooms

• Medical and first-aid facilities available in case of emergencies

• Strict invigilation to ensure a fair examination environment

Officials have also ensured that students entered the examination halls in an organized manner, helping maintain a smooth and disciplined exam process across all centres.

10 00 AM IST - 06 Mar'26

Karnataka 2nd PUC Physics Exam 2026 Begins Across All Centres

The Karnataka 2nd PUC Physics Exam 2026 has officially begun across examination centres in the state, with students starting to write the paper under the supervision of invigilators. Authorities have ensured the smooth conduct of the exam with proper arrangements.

09 00 AM IST - 06 Mar'26

Last-Minute Formula Quick Revision for Karnataka 2nd PUC Physics Exam 2026

In the final hours before the exam, students should revise important formulas from high-weightage chapters instead of learning new concepts. Many Physics questions directly test formula application.

Important formulas to revise:

• Coulomb’s Law
  F = (1 / (4 × pi × epsilon0)) × (q1 × q2 / r²)

• Electric field due to point charge
  E = (1 / (4 × pi × epsilon0)) × (q / r²)

• Capacitance of parallel plate capacitor
  C = epsilon0 × A / d

• Lens formula
  1 / f = 1 / v + 1 / u

• Magnetic field inside solenoid
  B = mu0 × n × I

Students should also revise formulas from Ray Optics, Current Electricity, and Modern Physics, as numerical problems are frequently asked from these chapters.

08 30 AM IST - 06 Mar'26

Exam Hall Preparation Tips Before the Physics Paper

Students appearing for the Karnataka 2nd PUC Physics Exam 2026 should stay calm and follow a clear strategy before entering the exam hall.

Important tips:

• Revise only important formulas and definitions in the final hour.

• Carry hall ticket, ID proof, and required stationery.

• Reach the exam centre at least 30 minutes before reporting time.

• Avoid discussing difficult topics with friends before the exam.

• Read the question paper carefully and start with easy questions first.

A calm mindset and proper time management can help students perform confidently and maximize their score in the Physics examination.

07 30 AM IST - 06 Mar'26

Common Mistakes Students Should Avoid in Physics Exam

Many students lose marks due to small mistakes rather than lack of knowledge.

Important things to remember:

• Always write formulas before solving numericals

• Mention correct SI units in final answers

• Draw diagrams where required

• Avoid skipping calculation steps

Checking answers once after completing the paper can help students identify calculation errors and improve overall score.

06 30 AM IST - 06 Mar'26

Last Minute Tip: Revise All Important Units

Students should revise SI units of physical quantities, as these are frequently asked in MCQs.

Examples include:

Electric field → N/C
Capacitance → Farad
Magnetic field → Tesla
Electric current → Ampere

Questions based on units and dimensions are usually straightforward, so revising them can help students secure quick marks.

05 30 AM IST - 06 Mar'26

Frequently Asked Question: Huygens Principle

Huygens principle is an important concept in Wave Optics.

Students should revise:

• Wavefront definition

• Secondary wavelets concept

• Application of Huygens principle

Important idea:

Every point on a wavefront acts as a source of secondary wavelets.

Questions based on this concept usually appear in 2-mark or 3-mark sections, so understanding the explanation clearly is important.

04 30 AM IST - 06 Mar'26

High Scoring Chapter: Semiconductor Diode Applications

The Semiconductor Electronics chapter is considered easy and scoring.

Students should revise:

• Forward bias and reverse bias of PN junction

• Diode as rectifier

• Half wave rectifier circuit

• Zener diode application

Important concept:

In forward bias, current flows easily through the diode.
In reverse bias, the diode blocks current.

Questions from this chapter are usually asked as MCQs or short answers.

03 30 AM IST - 06 Mar'26

Important Topic: Magnetic Field Due to Straight Conductor

This topic is commonly asked in 2-mark or 3-mark questions.

Students should revise:

• Magnetic field around current carrying conductor

• Right hand thumb rule

• Factors affecting magnetic field strength

Important formula:

Magnetic field due to straight conductor
B = (mu0 × I) / (2 × pi × r)

Where

I = current
r = distance from conductor

This formula is often used in numerical problems.

02 30 AM IST - 06 Mar'26

Most Expected 3-Mark Question: Kirchhoff’s Laws

Kirchhoff’s laws are fundamental concepts in Current Electricity and frequently appear as short descriptive questions.

Students should revise:

• Kirchhoff’s Current Law (KCL)

• Kirchhoff’s Voltage Law (KVL)

• Application of these laws in electrical circuits

Important concepts:

Kirchhoff’s Current Law
Sum of currents entering a junction = Sum of currents leaving the junction

Kirchhoff’s Voltage Law
Sum of potential differences in a closed loop = 0

Students should also practise simple circuit problems based on these laws.

01 30 AM IST - 06 Mar'26

Part D Numerical Prediction: Combination of Capacitors

A combination of capacitors is a frequently asked numerical topic in the Physics exam. Questions usually test the ability to calculate equivalent capacitance and stored energy.

Important formulas to revise:

Series combination of capacitors
1 / C = 1 / C1 + 1 / C2 + 1 / C3

Parallel combination of capacitors
C = C1 + C2 + C3

Students should carefully calculate total capacitance first, then apply formulas for charge or energy if required. Writing each step clearly helps secure full marks in numerical problems.

12 30 AM IST - 06 Mar'26

Quick Writing Tip for Derivations in Physics

Presentation matters a lot in descriptive Physics answers.

Students should follow these steps while writing derivations:

• Start with law or principle used

• Draw clear diagram if required

• Write derivation step by step

• Highlight final formula

Examiners often award marks for each correct step, so even partial derivations can score marks if written clearly.

11 30 PM IST - 05 Mar'26

Last Minute Revision: Photoelectric Effect

Photoelectric effect questions appear frequently in short answer sections.

Students should revise:

• Definition of photoelectric effect

• Threshold frequency

• Work function of metal

• Graph between stopping potential and frequency

Important formula:

Einstein photoelectric equation
h × nu = phi + (1 / 2) × m × v²

Where

phi = work function
nu = frequency of light

This chapter is easy and highly scoring.

10 50 PM IST - 05 Mar'26

Important Numerical from Magnetic Field Due to Circular Loop

Magnetism includes numerical problems related to circular current loops.

Important formula:

Magnetic field at centre of circular loop
B = (mu0 × I) / (2 × R)

Where

I = current
R = radius of loop

Students should practise substitution carefully and ensure that units are written correctly (Tesla).

10 30 PM IST - 05 Mar'26

Most Expected MCQs from Electromagnetic Waves

Electromagnetic waves chapter is simple and scoring.

Important MCQ concepts include:

• Electromagnetic waves travel with speed of light

• Relationship between electric and magnetic fields

• Applications of different EM waves

Important formula:

Speed of electromagnetic wave
c = 1 / sqrt(mu0 × epsilon0)

Where

mu0 = permeability of free space
epsilon0 = permittivity of free space

These questions usually appear in Part A MCQ section.

10 10 PM IST - 05 Mar'26

Ray Optics: Important Long Answer – Telescope

Optical instruments like telescope and microscope are important descriptive topics.

Students should revise:

• Construction of astronomical telescope

• Magnifying power

• Image formation

Important formula:

Magnifying power of telescope (normal adjustment)
M = fo / fe

Where

fo = focal length of objective
fe = focal length of eyepiece

A neat diagram with ray paths is essential to score full marks.

09 50 PM IST - 05 Mar'26

Wave Optics: Important Conceptual Questions

Wave Optics usually contributes short theoretical questions.

Students should revise:

• Huygens principle

• Interference of light waves

• Diffraction phenomenon

• Coherent sources of light

Important concept:

Two sources are coherent if they produce waves of the same frequency with constant phase difference.

These questions are commonly asked in Part B or Part C sections.

09 30 PM IST - 05 Mar'26

Important Derivation: Expression for Drift Velocity

Drift velocity derivation from Current Electricity is a commonly asked 3 or 5 mark question.

Key points students should remember:

• Motion of electrons under electric field

• Average drift velocity concept

• Relation between current and drift velocity

Important formulas:

Drift velocity
vd = (e × E × tau) / m

Current relation
I = n × e × A × vd

Where

n = number of electrons
e = charge of electron
A = cross sectional area

Students should clearly explain each step in the derivation.

09 10 PM IST - 05 Mar'26

Expected Numerical: Wheatstone Bridge

The Wheatstone Bridge circuit is a common numerical problem from Current Electricity.

Important concepts:

• Condition for balanced Wheatstone bridge

• Relationship between four resistances

• Calculation of unknown resistance

Important formula:

P / Q = R / S

Where

P, Q = known resistances
R = known resistance
S = unknown resistance

Students should practise solving at least two numerical problems from this topic to gain confidence.

08 50 PM IST - 05 Mar'26

High Scoring Topic: Energy Stored in a Capacitor

Questions from Capacitance are commonly asked as both numerical and theory questions.

Important concepts to revise:

• Energy stored in capacitor

• Combination of capacitors

• Capacitor with dielectric medium

Important formula:

Energy stored in capacitor
U = (1 / 2) × C × V²

Where
C = capacitance
V = potential difference

Students should also revise problems involving series and parallel capacitor combinations, as they frequently appear in Part C or Part D questions.

08 30 PM IST - 05 Mar'26

Part D Most Expected Long Answer: Electric Field Due to Infinite Plane Sheet

This derivation from Electrostatics is frequently asked as a 5-mark question. Students should practise the derivation step by step and include a neat diagram.

Key points to include:

• Use Gauss’s law to derive the electric field.

• Draw a Gaussian surface across the plane sheet.

• Explain symmetry of the electric field.

Important formula:

Electric field due to infinite plane sheet
E = sigma / (2 × epsilon0)

Where
sigma = surface charge density
epsilon0 = permittivity of free space

This question is highly scoring when written with a diagram and clear steps.

08 10 PM IST - 05 Mar'26

Section-wise important questions students may encounter:

Part A – 1 Mark Questions (MCQs / Fill in the Blanks)

• Define electric dipole moment.

• SI unit of electric field.

• Define work function in photoelectric effect.

• What is magnetic flux?

• Define intrinsic semiconductor.

Part B – 2 Mark Questions

• State Gauss’s law.

• Define Kirchhoff’s current law.

• Write two applications of electromagnetic waves.

• Define mutual induction.

• State Bohr’s postulates.

Part C – 3 Mark Questions

• Explain Young’s double slit experiment.

• Derive relation between electric field and potential.

• Explain photoelectric effect with graph.

• Explain Huygens principle.

Part D – 5 Mark Long Answers / Numericals

• Derive expression for magnetic field inside a solenoid.

• Derive capacitance of parallel plate capacitor.

• Numerical problem from Wheatstone bridge.

• Derivation of drift velocity.

Students are advised to attempt easy questions first, draw diagrams wherever required, and show formula steps clearly while solving numerical problems to secure maximum marks in the Physics exam.

07 50 PM IST - 05 Mar'26

Last Minute Formula Revision: Ray Optics

Ray Optics includes several important formulas that are used in numerical problems.

Important formulas:

Mirror formula
1 / f = 1 / v + 1 / u

Lens formula
1 / f = 1 / v + 1 / u

Magnification formula
m = v / u

Power of lens
P = 1 / f

Students should practise substituting values correctly while solving problems.

07 30 PM IST - 05 Mar'26

Important Short Answers from Electromagnetic Induction

Electromagnetic Induction usually includes theory-based questions.

Important topics to revise:

• Faraday’s laws of electromagnetic induction

• Lenz’s law

• Self induction

• Mutual induction

Students should remember the formula:

Induced emf
E = - d(phi) / dt

Where phi represents magnetic flux.

These questions are usually asked in Part B or Part C.

07 10 PM IST - 05 Mar'26

Important Numerical from Electrostatics

Electrostatics often includes numerical problems based on Coulomb’s law.

Important formula:

Coulomb’s law
F = (1 / (4 × pi × epsilon0)) × (q1 × q2 / r²)

Where

F = force between charges
q1, q2 = magnitude of charges
r = distance between charges

Students should carefully substitute values and write units for the final answer to avoid losing marks.

06 50 PM IST - 05 Mar'26

Semiconductor Electronics: Logic Gate Questions

Logic gates are a simple but important part of the syllabus.

Students should revise:

• AND gate

• OR gate

• NOT gate

• Truth tables

Example:

AND gate truth table

A B Output
0 0 0
0 1 0
1 0 0
1 1 1

Logic gate questions are commonly asked in Part A or Part B, so revising these concepts can help students secure easy marks.

06 30 PM IST - 05 Mar'26

Part B Important Concept Questions from Magnetism

Magnetism is another scoring chapter that contributes 2-mark conceptual questions.

Important topics include:

• Magnetic dipole moment

• Magnetic field due to circular loop

• Properties of magnetic field lines

• Earth’s magnetic field

Students should write answers in two to three clear points, as examiners generally expect concise explanations for these questions.

06 10 PM IST - 05 Mar'26

Alternating Current: Most Important Numerical Formula

Numerical questions from Alternating Current often appear in the long answer section.

Important formulas to revise:

Root mean square current
Irms = I0 / sqrt(2)

Root mean square voltage
Vrms = V0 / sqrt(2)

Impedance in AC circuit
Z = sqrt(R² + (XL − XC)²)

Resonance condition
XL = XC

Students should practise solving circuit problems involving these formulas.

05 50 PM IST - 05 Mar'26

Part C Expected Question: Young’s Double Slit Experiment

Young’s Double Slit Experiment is one of the most commonly asked 3-mark questions in Wave Optics.

Important points students should include:

• Principle of interference

• Experimental setup

• Bright and dark fringes formation

• Fringe width formula

Important formula:

Fringe width
beta = lambda × D / d

Where
lambda = wavelength of light
D = distance between screen and slits
d = distance between slits

Students should also practise solving numerical problems based on this formula.

05 30 PM IST - 05 Mar'26

Important Diagram-Based Questions in Physics

Many Physics questions require neat labelled diagrams, especially in descriptive answers.

Important diagrams to practice:

• Electric dipole field lines

• Capacitor with dielectric

• Compound microscope

• Astronomical telescope

• PN junction diode

Students should draw diagrams with clear labels and arrows. Even if the explanation is short, a correct diagram can help secure additional marks in the evaluation process.

05 10 PM IST - 05 Mar'26

Modern Physics: Easy Scoring Chapter for Quick Revision

Modern Physics is one of the easiest and most scoring units in the 2nd PUC Physics syllabus. Questions from this chapter are mostly concept-based and formula-based, making it ideal for quick last-minute revision.

Important topics to revise:

• Bohr’s atomic model

• Energy levels of hydrogen atom

• De Broglie wavelength

• Photoelectric effect

Important formulas to remember:

Energy of electron in nth orbit
E = -13.6 / n² eV

De Broglie wavelength
lambda = h / p

Students should revise these formulas carefully as 1-mark and 2-mark questions are frequently asked.

04 50 PM IST - 05 Mar'26

Time Management Strategy for Physics Exam

Time management can help students attempt all questions confidently.

Suggested approach:

• First 20 minutes → Attempt Part A (MCQs and definitions)

• Next 40 minutes → Solve Part B short questions

• Next 50 minutes → Write Part C explanations

• Remaining time → Solve Part D numerical problems carefully

Students should also keep 10 minutes at the end for revision to check calculations and units.

04 30 PM IST - 05 Mar'26

One Word and Fill in the Blanks Revision

Students should quickly revise important one-word answers before the exam.

Examples include:

• SI unit of electric field → N/C

• Unit of capacitance → Farad

• Device used to detect electric current → Galvanometer

• Property of materials strongly attracted by magnets → Ferromagnetism

These questions usually appear in Part A, so remembering basic units and definitions is essential.

04 10 PM IST - 05 Mar'26

Important Derivation: Magnetic Field Inside Solenoid

A frequently asked derivation in Physics exams is the magnetic field inside a long solenoid.

Important steps students must remember:

• Use Ampere’s circuital law

• Draw a proper solenoid diagram

• Write Magnetic Field Inside a Solenoid Formula:

  B = μ₀ n I

  Where:
  • B = Magnetic field inside the solenoid
  • μ₀ = Permeability of free space
  • n = Number of turns per unit length of the solenoid
  • I = Current flowing through the solenoid

This question often appears in Part C or Part D, and a neat diagram can help students secure full marks.

03 50 PM IST - 05 Mar'26

Electrostatic Potential and Capacitance: Short Answer Focus

This chapter often contributes 2-mark and 3-mark questions.

Important topics include:

• Potential difference definition

• Relation between electric field and potential

• Capacitor combinations

• Energy stored in a capacitor

Students should also revise the formula:

U = (1/2) CV²

Where:
• U = Energy stored in the capacitor
• C = Capacitance
• V = Potential difference (Voltage)

Questions based on capacitor energy are commonly asked in numerical form.

03 30 PM IST - 05 Mar'26

Alternating Current: Formula-Based Questions

Alternating Current is an important chapter where formula-based numerical problems are frequently asked in the exam. Students who remember the key formulas and practise basic circuit problems can easily score marks from this section.

Important Formulas:

• RMS Value of Current:
I₍rms₎ = I₀ / √2

• Impedance Relation:
Z = √[ R² + (Xᴸ − Xᶜ)² ]

• Resonance Condition:
Xᴸ = Xᶜ

Students should practise AC circuit numerical problems, especially those involving impedance, resonance, and RMS values, as these commonly appear in Part-D long answer numerical questions in the Physics exam.

03 15 PM IST - 05 Mar'26

Atoms and Nuclei: Important Theory Questions

The Atoms and Nuclei chapter is relatively easy and scoring.

Important questions to revise:

• Bohr’s postulates of atomic model

• Expression for radius of orbit

• Energy levels of hydrogen atom

• Radioactive decay law

Students should remember the energy level formula and also revise nuclear reactions, which may appear in short answer questions.

03 00 PM IST - 05 Mar'26

Semiconductor Electronics: Important MCQs

The Semiconductor Electronics chapter contributes many MCQ and 1-mark questions.

Students should revise the following:

• Types of semiconductors: Intrinsic and Extrinsic

• Difference between p-type and n-type semiconductors

• Working of p-n junction diode

• Logic gates: AND, OR, NOT

Truth tables for logic gates are especially important because they are frequently asked in objective questions.

02 45 PM IST - 05 Mar'26

Part D Expected Numerical: Current Electricity

Numerical problems from Current Electricity are commonly asked in the 5-mark section.

Important areas to practice:

• Combination of resistors in series and parallel

• Application of Kirchhoff’s laws

• Wheatstone bridge problems

• Electrical power formula P=VIP = VIP=VI

Students should solve these problems step by step:

• Write formula

• Substitute values

• Mention correct unit in final answer

This approach helps secure full marks.

02 30 PM IST - 05 Mar'26

Dual Nature of Radiation and Matter: High Probability Questions

The Dual Nature of Radiation and Matter chapter often appears in short answer and conceptual questions.

Important topics include:

• Einstein’s photoelectric equation

• Definition of work function

• De Broglie wavelength formula

• Graph between stopping potential and frequency

Students should clearly understand the photoelectric effect experiment, as it is frequently asked as a 3-mark explanation question.

02 15 PM IST - 05 Mar'26

Wave Optics: Important 3-Mark Questions to Revise

Wave Optics is an important scoring chapter that frequently appears in 3-mark questions (Part C).

Important questions to prepare:

• Explain Young’s Double Slit Experiment

• Derive the expression for fringe width

• Conditions for constructive and destructive interference

• Difference between interference and diffraction

Students should also remember the formula:

• Fringe width β = λD / d

Practising numerical problems based on this formula can help students solve questions quickly in the exam.

02 00 PM IST - 05 Mar'26

Exam Writing Tips for Physics Paper

Along with preparation, presentation plays a major role in scoring marks in Physics exams.

Students should follow these writing tips:

• Write formulas before solving numerical problems

• Draw neat diagrams wherever required

• Underline key terms in theory answers

• Mention correct SI units for final answers

Following these simple techniques can help students secure maximum marks even in descriptive answers.

01 45 PM IST - 05 Mar'26

Electromagnetic Induction: Important Theory Questions

Electromagnetic Induction is an important conceptual chapter.

Key topics to revise:

• Faraday’s laws of electromagnetic induction

• Lenz’s law and its significance

• Self inductance and mutual inductance

• Energy stored in an inductor

Students should focus on writing clear explanations and diagrams, as these topics are commonly asked in 3-mark theory questions.

01 30 PM IST - 05 Mar'26

Magnetism and Matter: Expected Short Questions

Magnetism is another important chapter that contributes to short theoretical questions.

Students should revise:

• Magnetic dipole moment

• Magnetic field lines properties

• Difference between diamagnetic, paramagnetic and ferromagnetic materials

• Torque on a magnetic dipole

These topics frequently appear in 2-mark or 3-mark questions, so understanding the concepts clearly can help students answer them quickly.

01 15 PM IST - 05 Mar'26

Important One Word and Definition Questions

Many students lose marks in Part A due to lack of revision of simple definitions.

Important one-word or definition questions include:

• What is electric dipole moment?

• Define electric potential.

• Define resistivity.

• Define magnetic flux.

These questions are usually direct and easy, so revising basic definitions from all chapters can help students score quick marks in the first section.

01 00 PM IST - 05 Mar'26

Part D Long Answer Prediction: Capacitance of Parallel Plate Capacitor

Experts predict that derivations from Capacitance may appear in the long answer section.

Important points students must include:

• Definition of capacitance

• Relation between charge and potential difference

• Derivation of capacitance for parallel plate capacitor

• Effect of dielectric medium

Students should present the derivation step by step with formulas and explanation, as neat presentation can help secure full 5 marks.

12 45 PM IST - 05 Mar'26

Ray Optics: Scoring Numerical Problems

Ray Optics is considered one of the most scoring numerical chapters in the Physics exam.

Important areas to revise:

• Mirror formula and lens formula

• Magnification relation

• Combination of lenses

• Refraction through glass slab

Many questions in Part C and Part D are based on numerical problems from these formulas. Practicing a few previous year problems tonight can help students solve similar questions confidently in the exam.

12 30 PM IST - 05 Mar'26

Part B Important Short Answer Topics (2 Marks)

Short-answer questions in Physics often test basic principles and definitions.

Important 2-mark topics include:

• Statement of Gauss’s law

• Electric flux definition

• Kirchhoff’s current and voltage laws

• Magnetic field due to current carrying conductor

Students should focus on writing concise answers with correct definitions and formulas, as these questions require clear explanation within two to three lines.

12 15 PM IST - 05 Mar'26

Important MCQs from Current Electricity

Current Electricity is another high scoring chapter that appears in objective questions and numericals.

Students should revise the following MCQ concepts:

• Drift velocity definition

• Ohm’s law relation between V, I and R

• Resistivity and conductivity

• Temperature dependence of resistance

Most MCQs from this chapter test conceptual understanding, so revising definitions and formulas can help students quickly secure 1-mark questions in Part A.

12 00 PM IST - 05 Mar'26

Important Long Answer Derivation: Electric Field Due to Dipole

One of the most repeated long answer questions in previous year Physics papers is the derivation of electric field due to an electric dipole.

Key points students should remember:

• Define electric dipole and dipole moment

• Write the expression for electric field on axial line

• Draw a neat labelled diagram

• Show step-by-step derivation with formulas

In many exams this question appears as a 5-mark Part D question, so students should practise writing the derivation clearly with proper steps and units.

11 45 AM IST - 05 Mar'26

High Scoring Chapter to Revise First: Electrostatics

Electrostatics is one of the most scoring units in the Karnataka 2nd PUC Physics exam and often contributes questions in MCQs, short answers, and long derivations.

Important topics to revise:

• Coulomb’s Law and electric force formula

• Electric field and electric potential

• Electric field due to point charge and dipole

• Capacitance of a parallel plate capacitor

Students should especially practice derivations and numerical problems from these topics, as they are frequently asked in Part C and Part D questions in the final exam.

11 30 AM IST - 05 Mar'26

Important Formulas to Revise

Students should revise important formulas related to:

• Coulomb’s Law and Electric Field

• Capacitance and Electric Potential

• Ohm’s Law and Kirchhoff’s Laws

• Magnetic Field due to Current

• Faraday’s Law of Electromagnetic Induction

• AC Circuit Impedance and Resonance

• Lens and Mirror Formula

• Photoelectric Effect and de Broglie Wavelength