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Are you looking for Class 9 Physics Important Long Questions for the exams? You’ve come to the right place.

We have compiled a complete list of high-weightage long questions for 9th-grade Physics, based on the latest syllabus of the Punjab boards. This guide will help you focus your revision and score maximum marks.

Class 9 Physics Long Questions Chapterwise

Download the important long questions in PDF below

📏 Chapter 1: Physical Quantities and Measurements

1. What are physical quantities? Differentiate between base quantities and derived quantities with examples. Also list the seven base quantities and their SI units.
2. What are the branches of physics? State briefly.
3. What is meant by interdisciplinary fields of physics?
4. What is the scientific method? Explain its steps.
5. What is the scope of physics in everyday life?
6. Describe the construction and working of Vernier Callipers. How do you take a reading from it? Explain with a diagram.
7. Describe the construction and working of a Screw Gauge.
8. What is a physical balance? How is it used to measure mass?
9. Explain the concept of significant figures with examples.
10. What is the difference between precision and accuracy in measurements?

📌 Smart Syllabus Note: According to the official Smart Syllabus, Comprehensive Questions 1.3, 1.4, 1.5 have been deleted. Focus on the remaining questions.

🚀 Chapter 2: Kinematics

11. Differentiate between rest and motion with examples.
12. Define speed, velocity, and acceleration. Differentiate between them.
13. Derive the three equations of motion for uniformly accelerated linear motion.
14. Explain the graphical representation of motion using a speed-time graph. How can you determine distance and acceleration from such a graph?
15. What is the difference between distance and displacement? Explain with examples.
16. Explain vector addition graphically. How are vectors represented?
17. What is free fall? Explain the motion of a freely falling body.
18. What is a projectile? Describe the motion of a projectile.

📌 Smart Syllabus Note: Comprehensive Questions 2.3, 2.5, 2.7 have been deleted. Focus on the remaining questions.

⚡ Chapter 3: Dynamics

19. State and explain Newton’s First Law of Motion with examples. Define inertia.
20. State and explain Newton’s Second Law of Motion and derive the equation F = ma.
21. State and explain Newton’s Third Law of Motion with examples.
22. Define momentum. State and prove the law of conservation of momentum.
23. Explain the concept of friction. What are the advantages and disadvantages of friction?
24. How can we reduce friction?
25. Explain the difference between mass and weight.
26. What is the difference between force and momentum?

🔄 Chapter 4: Turning Effects of Forces

27. Define torque (moment of force). Derive its formula and state its SI unit.
28. State and explain the principle of moments.
29. Explain the concept of center of gravity and center of mass with examples.
30. What are the conditions of equilibrium? Explain with examples.
31. Differentiate between static and dynamic equilibrium.
32. Explain the concept of couple. Give examples from daily life.

💪 Chapter 5: Work, Energy, and Power

33. Define work in physics. Explain the mathematical form of work W = Fd cos θ.
34. Define kinetic energy and derive its formula K.E. = ½mv².
35. Define potential energy and derive its formula P.E. = mgh.
36. State and explain the law of conservation of energy with examples.
37. Define power. Derive its formula and state its SI unit.
38. Differentiate between energy and power.
39. What are the different forms of energy? Explain with examples.

🧱 Chapter 6: Mechanical Properties of Matter

40. Define stress and strain. Explain Hooke’s Law.
41. Differentiate between elastic and plastic deformation.
42. Define pressure. Explain Pascal’s Law and its applications.
43. What is density? Explain its measurement.
44. What is buoyancy? State and explain Archimedes’ Principle.
45. Define viscosity. Explain its applications in daily life.

🌡️ Chapter 7: Thermal Properties of Matter

46. Explain thermal expansion. Describe the types of thermal expansion with examples.
47. Define temperature. Explain the construction and working of a thermometer.
48. What is heat? Differentiate between heat and temperature.
49. Explain the concept of specific heat capacity.
50. What is latent heat of fusion and vaporization? Explain.

🧲 Chapter 8: Magnetism

51. What is magnetism? Explain the properties of magnets.
52. Describe the magnetic field around a bar magnet.
53. What is an electromagnet? Explain its construction and working.
54. What is electromagnetic induction? Explain with examples.
55. Differentiate between permanent and temporary magnets.

🌍 Chapter 9: Nature of Science

56. What is science? Explain the nature of science.
57. Explain the scientific method in detail.
58. What is the scope of physics in different fields?
59. What is the role of physics in technology and society?
60. Differentiate between a hypothesis, theory, and law.

📥 Download PDF of Physics Important Long Questions

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❓ Frequently Asked Questions (FAQs)

🎯 Expert Tips to Score High in Physics

1. Draw Diagrams: For questions on measuring instruments, forces, and graphs, always draw neat, well-labeled diagrams.
2. Learn Key Definitions: Terms like Velocity, Acceleration, Force, Torque, Work, and Energy must be memorized verbatim.
3. Practice Derivations: Derivations of equations of motion, kinetic energy, and law of conservation of momentum are frequently tested.
4. Solve Numerical Problems: Practice numerical problems from each chapter. Pay attention to units and significant figures.
5. Follow the Smart Syllabus (if applied): Pay close attention to the topics that have been deleted. Studying unnecessary topics is a waste of time.
6. Solve Past Papers: Cross-check these questions with past board papers to understand the exam pattern and marking scheme.

Important Long Questions of Class 9

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