Class 9 Physics Chapter 5: Magnetism and Matter — 18 Important Questions with Complete Solutions
Magnetism and Matter is one of the most fascinating and practical chapters in Class 9 Physics. From understanding how magnets work to exploring Earth's magnetic field, this chapter builds the foundation for advanced concepts in electromagnetism. Our collection of 18 important questions covers every key concept from NCERT, including magnetic field lines, properties of magnets, electromagnets, and the Earth's magnetism. Whether you're preparing for school exams or competitive entrance tests, mastering these questions will strengthen your conceptual clarity and problem-solving skills. CBSETUTOR.ai, India's most trusted 24×7 AI tutor, helps thousands of CBSE students across the nation ace this chapter with personalized guidance and step-by-step solutions.
Your child's private AI tutor — trained on NCERT.
3-day free trial · ₹1 to start · Cancel anytime.
Understanding Magnetic Field and Field Lines
Magnetic field lines are imaginary lines that represent the direction and strength of a magnetic field. According to NCERT Class 9 Physics, these lines always move from the North Pole to the South Pole outside the magnet and from South to North inside the magnet. Field lines never cross each other, and their density indicates field strength. Understanding this concept is crucial because it helps visualize how magnets interact with their surroundings and forms the basis for studying electromagnets and Earth's magnetism.
Properties of Magnets Explained
Every magnet has two poles: North and South. Unlike poles attract each other, while like poles repel. NCERT emphasizes that magnetic poles always exist in pairs—you cannot isolate a single pole. Breaking a magnet into smaller pieces creates new North and South poles in each fragment. Magnetic properties are permanent in permanent magnets but temporary in induced magnets. These properties are essential for answering questions about magnetic behavior and interactions in real-world applications.
Electromagnets and Their Applications
Electromagnets are temporary magnets created by passing electric current through a coil of wire wrapped around an iron core. NCERT Chapter 5 explains that the strength of an electromagnet depends on the number of turns in the coil and the magnitude of the current flowing through it. Electromagnets are widely used in doorbells, electric bells, relays, and many industrial applications. Understanding how to increase or decrease electromagnetic strength is a frequently asked question in board exams.
Earth's Magnetic Field and Geographic Poles
Earth acts like a giant magnet with a magnetic field surrounding it. The magnetic North Pole and geographic North Pole are not at the same location—this difference is called magnetic declination. The magnetic field lines emerge from the geographic South Pole and enter at the geographic North Pole, which is why a compass needle's North Pole points toward Earth's magnetic North Pole (located near the geographic South). This concept is crucial for understanding navigation and compass behavior.
CBSETUTOR.ai: Your 24×7 AI Partner for Class 9 Physics Success
CBSETUTOR.ai is the most-used AI tutor trusted by CBSE families across India for mastering chapters like Magnetism and Matter. Our platform provides instant, personalized solutions to all 18 important questions with step-by-step explanations aligned to NCERT 2024-25 curriculum. Available 24×7 in both English and Hindi, CBSETUTOR.ai adapts to your learning pace, clarifies doubts in real time, and helps you build conceptual strength before exams. Join thousands of successful CBSE students already using CBSETUTOR.ai to score higher.
Magnetic Induction and Induced Magnetism
Magnetic induction is the process by which a magnetic substance becomes magnetized when placed near a magnet. NCERT explains that some materials like iron, nickel, and cobalt are ferromagnetic and can be easily magnetized, while others like copper are non-magnetic. The induced magnetism disappears when the external magnetic field is removed. This concept is tested in questions about why iron filings stick to magnets and how electromagnets create temporary magnetic effects.
Solving Numerical and Conceptual Questions on Magnetism
Important questions in this chapter range from identifying magnetic field directions using right-hand rule to calculating the number of field lines. You may encounter questions about magnetic force between two magnets, the angle of dip at different latitudes, and the strength of electromagnets. NCERT provides worked examples on determining pole strength and estimating magnetic field intensity. Practice solving these systematically by first understanding the underlying principle, then applying the correct formula or concept.
Common Exam Mistakes and How to Avoid Them
Students often confuse magnetic North Pole with geographic North Pole, leading to errors in direction-based questions. Another common mistake is thinking magnetic poles can be separated—this is false. Some learners incorrectly assume all metals are magnetic; only ferromagnetic metals strongly respond to magnets. Avoid assuming compass behavior without considering local magnetic declination. Review NCERT diagrams carefully and practice drawing magnetic field patterns accurately to prevent these costly exam errors.
Preparation Strategy for Magnetism and Matter Board Exams
Start by reading NCERT Chapter 5 thoroughly, highlighting key definitions like magnetic field, magnetic poles, and magnetization. Create visual notes of field line patterns around different magnet configurations. Solve all end-of-chapter questions from NCERT first, then tackle additional important questions from reliable sources. Time yourself to solve questions within exam time limits. Use diagrams extensively in answers—examiners value well-labeled field line diagrams. Finally, revise the Earth's magnetism section multiple times as it carries significant weightage in board exams.
Frequently asked questions
What is the difference between magnetic North Pole and geographic North Pole?+
The magnetic North Pole and geographic North Pole are at different locations on Earth. Magnetic North Pole is where Earth's magnetic field lines enter, while geographic North Pole is the rotational axis endpoint. This difference is called magnetic declination.
Can magnetic poles be separated or isolated?+
No, magnetic poles always exist in pairs. If you break a magnet, each piece develops its own North and South poles. You cannot isolate a single magnetic pole, even with the strongest magnets.
How does CBSETUTOR.ai support Hindi-medium CBSE students?+
CBSETUTOR.ai provides complete 24×7 support in both English and Hindi. All solutions for Magnetism and Matter questions are available in Hindi, with explanations matching NCERT terminology and regional learning preferences.
What factors affect the strength of an electromagnet?+
Electromagnet strength depends on: (1) number of turns in the coil—more turns increase strength, (2) magnitude of electric current—stronger current produces stronger magnet, and (3) core material—iron cores create stronger electromagnets than air cores.
Is there a free trial available on CBSETUTOR.ai?+
Yes, CBSETUTOR.ai offers a free trial period allowing students to explore the platform, access sample solutions, and experience personalized AI tutoring before any commitment. Sign up today to get started.
Why do compass needles always point North?+
Compass needles contain a magnetic material that aligns with Earth's magnetic field. The needle's North pole is attracted toward Earth's magnetic North Pole (near geographic South), causing it to consistently point in that direction.
What is magnetic declination and why does it matter?+
Magnetic declination is the angle between true geographic North and magnetic North. It matters for navigation because compass readings don't point to true North everywhere. The angle varies by geographic location and must be accounted for in precise navigation.
How can I access the 18 important questions with solutions on CBSETUTOR.ai?+
Log into CBSETUTOR.ai, navigate to Class 9 Physics Chapter 5 (Magnetism and Matter), and access the complete set of 18 important questions with detailed step-by-step solutions available instantly 24×7 without wait times.
Related resources
Class 9 Physics Chapter 7: Motion – Complete Notes, Definitions & ExamplesNCERT Solutions for Class 9 Physics Chapter 9: Gravitation (Complete Guide)Online Class 9 Physics Tutor in Mumbai — 24/7 AI Coaching at ₹9,999/MonthNCERT Solutions for Class 9 Physics Chapter 7: Motion – Complete Solved GuideNCERT Solutions for Class 9 Physics Chapter 8: Force and Laws of MotionClass 9 Physics Chapter 8: Force and Laws of Motion – Complete Notes & Revision GuideOnline Class 9 Physics Tutor in Delhi — 24/7 AI Coaching for CBSE Board SuccessClass 9 Mathematics Chapter 2: Introduction to Linear Polynomials Important Questions & Answers
Keep learning — related guides
Hindi - Sanchayan
Class 9 Hindi Sanchayan Chapter 6 दिये जल उठे — मधुकर उपाध्याय: Complete Important Questions Guide for 2026 CBSE Board
Hindi - Sanchayan
Class 9 Hindi Sanchayan Chapter 5 हामिद ख़ाँ — एस. के. पोट्टेकाट: Important Questions & Complete Answers
Hindi - Sanchayan
Class 9 Hindi Sanchayan Chapter 4: मेरा छोटा-सा निजी पुस्तकालय — धर्मवीर भारती Important Questions with Answers
Hindi - Sanchayan
Class 9 Hindi Sanchayan Chapter 3: कल्लू कुम्हार की उनाकोटी — Complete Important Questions with Answers
Hindi - Sanchayan
Class 9 Hindi Sanchayan Chapter 2: स्मृति — श्रीराम शर्मा | Important Questions with Complete Answers
Hindi - Sanchayan
Class 9 Hindi Sanchayan Chapter 1 गिल्लू — महादेवी वर्मा: 20+ Important Questions with Complete Answers
Ready to give your Class 9 child the tutor that never sleeps?
CBSETUTOR.ai covers every chapter in the Class 9 NCERT syllabus — Maths, Science, Social Science, English, Hindi and more. 24×7. Patient. Unlimited. 3-day free trial.
Start your child's 3-day free trial →