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Class 9 Physics Chapter 5 Magnetism and Matter: Previous Year Questions with Solutions
Magnetism and Matter is one of the most important chapters in CBSE Class 9 Physics, covering concepts like magnetic fields, properties of magnets, and Earth's magnetism. Previous year questions help students understand the exam pattern, question types, and the depth required to score well. This guide brings you authentic, NCERT-aligned previous year questions with step-by-step solutions—exactly as they appear in board exams and competitive entrance tests. Whether you're preparing for term exams, half-yearly, or final boards, these solved questions build confidence and clarity on topics like bar magnets, magnetic lines of force, and magnetic poles.
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Understanding Magnetic Properties and Bar Magnets
The NCERT Class 9 Physics Chapter 5 begins with the properties of magnets. A bar magnet has two poles—north and south—and like poles repel while unlike poles attract. Previous year questions frequently ask students to explain why a magnet has two poles and cannot be isolated. Understanding magnetic dipoles, the alignment of atomic magnets, and why heating destroys magnetism are core concepts tested in board exams and form the foundation for electromagnetic induction in later classes.
Magnetic Lines of Force and Magnetic Fields
Magnetic lines of force are imaginary curves showing the direction and strength of a magnetic field. CBSE exams regularly include questions on how to draw magnetic field patterns around a bar magnet, the properties of magnetic lines (they never cross, are closer at poles, form closed loops), and how to use iron filings to visualize fields. Previous year papers show that 3–5 mark questions often ask students to compare electric and magnetic field lines or explain why magnetic monopoles do not exist in nature.
Earth's Magnetism and Magnetic Declination
Earth acts as a giant magnet with magnetic poles that do not coincide with geographic poles. Magnetic declination—the angle between true north and magnetic north—varies geographically and is a frequently tested concept. NCERT Chapter 5 emphasizes the angle of dip (or inclination) and magnetic declination. Previous year questions test students' ability to define these terms, explain their causes, and solve numerical problems involving compass deflection and navigation applications.
Electromagnets and Their Applications
An electromagnet is a temporary magnet created by passing electric current through a coil. NCERT covers how increasing current, adding more turns, or inserting an iron core strengthens the magnetic field. Board exam questions ask students to design electromagnets, explain their advantages over permanent magnets, and cite real-world uses in relays, electric bells, cranes, and medical imaging (MRI). Previous year solutions show how to calculate magnetic field strength at the center of a solenoid using B = μ₀nI.
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Magnetic Effect of Electric Current
When electric current flows through a conductor, it produces a magnetic field around it. Right-hand rule (or Fleming's left-hand rule) determines the direction. NCERT Chapter 5 explains how current-carrying wires, coils, and solenoids generate magnetic fields. Previous year board papers (2019–2024) consistently test students' ability to apply these rules, predict field direction, and relate field strength to current magnitude. Numericals often combine Ohm's law with magnetic field calculations.
Magnetic Force on Moving Charges and Conductors
A moving charged particle in a magnetic field experiences a Lorentz force perpendicular to both velocity and field (F = qvB sin θ). Conductors carrying current in a magnetic field also experience force, used in electric motors and loudspeakers. CBSE previous year questions ask students to calculate force magnitude, determine direction using Fleming's left-hand rule, and explain why a conductor perpendicular to the field experiences maximum force. This bridges Class 9 concepts into Class 10 electromagnetic induction.
Common Previous Year Question Patterns and Solutions
Board exams test magnetism through multiple-choice, short-answer (2–3 marks), and long-answer (5 marks) questions. Common patterns include: (1) Drawing magnetic field lines around a bar magnet or solenoid; (2) Defining magnetic declination and dip; (3) Comparing permanent and electromagnets; (4) Numerical problems on magnetic field inside a solenoid; (5) Explaining Earth's magnetism. Authentic solutions from 2019–2024 CBSE papers reveal that students must show all steps, define terms clearly, and include relevant diagrams for full marks.
Tips for Solving Magnetism Problems Correctly
Always start by identifying the type of magnet (bar, electromagnet, Earth) and the quantity to find (field strength, force, declination). Use the right-hand or left-hand rule carefully; mistakes here cost marks. For numerical problems, write the formula, substitute values with units, and show calculation steps. Practice drawing magnetic field line patterns until they become second nature—examiners expect neat, accurate diagrams. Revise definitions of magnetic pole, magnetic axis, magnetic dipole moment, and related terms weekly to retain them for exams.
How to Use Previous Year Questions in Your Study Plan
Start by solving questions from recent years (2022–2024) under timed conditions to simulate board exams. Check solutions only after attempting; this builds problem-solving skills. Group questions by topic (bar magnets, Earth's magnetism, electromagnets) and solve all variants to ensure mastery. Use previous year papers to identify weak areas—if you struggle with magnetic field direction, focus extra on Fleming's rules. Solve each question at least twice: once during learning, once during revision. CBSETUTOR.ai's AI tracks your progress and recommends personalized practice.
Frequently asked questions
What are the key topics in CBSE Class 9 Physics Chapter 5 Magnetism and Matter?+
Key topics include properties of magnets, magnetic lines of force, Earth's magnetism, magnetic declination, angle of dip, electromagnets, magnetic effect of electric current, and magnetic force on conductors. All are tested regularly in board exams through both theory and numerical problems.
How many marks is Magnetism and Matter worth in CBSE Class 9 Physics?+
Magnetism and Matter typically carries 10–12 marks out of 80 in the Class 9 Physics final exam, split across multiple-choice (1 mark), short-answer (2–3 marks), and long-answer (5 marks) questions based on official CBSE marking schemes.
Does CBSETUTOR.ai offer free trial access to previous year questions?+
Yes. CBSETUTOR.ai provides a free 24-hour trial with full access to solved previous year questions, live doubt sessions, and AI-powered practice on Magnetism and Matter. No credit card required to start; sign up via web or mobile app.
Are previous year solutions available in Hindi medium on CBSETUTOR.ai?+
Yes. CBSETUTOR.ai supports Hindi-medium learners with bilingual explanations, video lessons in Hindi, and solved papers in both Hindi and English for maximum clarity and confidence-building during exam prep.
What is magnetic declination and why is it important?+
Magnetic declination is the angle between true (geographic) north and magnetic north. It varies by location and is important for navigation and compass use. CBSE exams test students' ability to define it, explain causes, and solve related numerical and conceptual problems.
How do I calculate magnetic field strength inside a solenoid?+
The magnetic field inside a long solenoid is B = μ₀nI, where μ₀ = 4π × 10⁻⁷ T·m/A, n is the number of turns per unit length, and I is the current. Previous year solutions show step-by-step substitution and unit handling for accuracy.
Which previous year questions are most frequently repeated in CBSE Physics?+
Questions on drawing magnetic field patterns, defining magnetic declination, comparing permanent and electromagnets, and numerical problems on solenoid field strength appear most often. CBSETUTOR.ai's analytics identify these high-frequency topics for targeted revision.
Can I access CBSETUTOR.ai's magnetism lessons and solved papers on mobile?+
Absolutely. CBSETUTOR.ai's app (iOS and Android) offers offline access to video lessons, solved previous year questions, and AI practice tools. Study anywhere, anytime—perfect for busy students preparing for CBSE exams across India.
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