First year science students 5 chapter imp questions for physics

Here are important questions from Physics for First Year Science (Class 11) students, based on commonly studied chapters across many curricula (CBSE, State Boards, etc.). These questions focus on concept clarity and frequently asked topics in exams. 🔭🙀 --- ✅ Chapter 1: Physical World & Measurement Important Questions: 1. What are the fundamental forces of nature? Explain any two. 2. Define and explain the concept of significant figures. 3. What is dimensional analysis? State its applications. 4. Derive the formula for the time period of a simple pendulum using dimensional analysis. 5. Differentiate between fundamental and derived quantities. --- 🤗💪 ✅ Chapter 2: Kinematics Important Questions: 1. Derive the three equations of motion using calculus/graphical method. 2. Define displacement, velocity, and acceleration with suitable examples. 3. A body moves with uniform acceleration. Derive expression for distance traveled in nth second. 4. Explain projectile motion and derive expression for maximum height and range. 5. Explain scalar and vector quantities with examples. --- 🖤🤔 ✅ Chapter 3: Laws of Motion Important Questions: 1. State and explain Newton’s three laws of motion with examples. 2. What is the law of conservation of momentum? Derive it from Newton’s second law. 3. Define friction. Differentiate between static and kinetic friction. 4. Explain the concept of inertia and its types. 5. What is the angle of repose? Derive the expression for it. --- ✅ Chapter 4: Work, Energy & Power Important Questions: 1. Define work. When is work said to be positive, negative, or zero? 2. Derive the relation between kinetic energy and work. 3. State and prove the law of conservation of mechanical energy for a freely falling body. 4. Define power and energy. What are their SI units? 5. Differentiate between conservative and non-conservative forces. --- ✅ Chapter 5: Motion of System of Particles & Rigid Body Important Questions: 1. Define center of mass. Derive the expression for the center of mass of two particles. 2. Explain the concept of torque and angular momentum. 3. What is the moment of inertia? Explain its significance in rotational motion. 4. Derive the relation between torque and angular acceleration. 5. State and prove the principle of conservation of angular momentum. --- ⭐ Tips for Exam Preparation: Focus on derivations and their physical meaning. Practice numericals from each chapter. Understand the conceptual differences (e.g., between work and energy, force and torque). Draw diagrams wherever necessary – especially in projectile motion and torque questions. --- Would you like a PDF revision sheet with these questions or answers/solutions to any specifics 🔥🌟 by study tools