Important three marks chapter wise

Ln1:

1. Rules for determining significant figures?Ln1 Pg28
2. Write a note on triangulation method to measure larger distance?Ln1 Pg13
3. Check the correctness of the equation v = u +at? Or 1/2 mv² = mgh Ln1 Pg33
4. How will you measure the distance between the earth and the moon using parallax method?Ln1 Pg13
5. Derive the dimentional formula for the expression hc/G where H is planks constant c is the speed of light and G is Gravitational constant?Ln 1 Refer Guide
6. Application and Limitations of the Method of Dimensional Analysis?
7. What are Gross Errors?How it can be minimised?

Ln2:

1. Define displacement and distance?Ln2 Pg60
2. Write down the kinematic equations for angular Motion?Ln2 Pg94
3. Derive relation between linear velocity and angular velocity?Ln2 Pg96
4. What is the difference between velocity and average velocity.
5. Show that the path of the projectile is parabola?

Ln3:

1. What are inertial frames?Ln3 Pg107
2. Explain inertia of rest with two examples?Ln3 Pg106
3. What is inertia?Give the types of inertia?
4. Using free body diagram,show that it is easy to pull an object than to push it?Ln3 Pg140
5. Explain the similarities and differences of centripetal and centrifugal forces?Ln3 Pg 156
6. Differentiate static friction and Kinetic Friction / types of friction?
7. When a cricket player catches the ball, he pulls his hands gradually in the direction of the ball’s motion. Why?
8. State and explain lami’s theorem ?

Ln4:

1. Write the differences between conservative and non-conservative forces?Ln4 Pg182
2. Derive the expression for loss of kinetic energy in a perfect inelastic collision?Ln4 Pg199
3. Explain various types of potential energy.Explain its formula?Pg176
4. Distinguish between elastic and ineleastic collision?

Ln5:

1. What is the relation between torque and angular momentum? Ln5 Pg226
2. What is radiation of gyration?Ln5 Pg237
3. How do you distinguish between stable and unstable equilibrium?Ln5 BB8 Pg262
4. Define torque.Mention its unit?
5. Discuss conservation of angular momentum with example?Q7

Ln6:

1. State kepler’s three laws of planetary motion?Ln6 Pg2
2. Why there are no lunar eclipse and solar eclipse every month?Ln6 Pg37
3. What are geostationary and polar satellites?BB12

Ln7:

1. What are the applications of viscosity?Ln7 Pg71
2. Write down the expression for the stoke’s force and explain the symbols involved in it?Ln7 BB17 Pg92
3. What is Reynold’s number?Give its significance.
4. How is surface tension related to surface energy?
5. Obtain an expression for the excess of presure inside a liquid drop?
6. Write the practical applications of capillarity?Pg80
7. We use straw to suck soft drinks, why?
8. Distinguish between streamlined flow and turbulant flow?

Ln8:

1. Derive the expression for the work done in an isothermal process? Ln8 Pg126
2. Draw the Pv diagram for isothermal expansion and isobaric compression and adiabatic processes?Ln 8 Pg125 & Pg132
3. Give the expression for linear,area and volume thermal expansions?
4. Conditions for reversible process?
5. Explain the types of thermal expansion?

Ln9:

1. Write the expression for RMS speed,Average speed and most probable speed of a gas molecule?Ln9 BB4 Ln9
2. Write any three postulates of kinetic theory of gases?Ln9 Pg164

Ln10:

1. 1.State the laws of simple pendulum?Ln10 Pg208

Ln11 :

1. Describe Newton’s formula for velocity of sound waves in air?Ln 11 BB4 Pg 227
2. State the laws of simple pendulum?Pg208
3. Difference between transverse and longitudinal waves?
4. Compare progressive waves and stationary waves(Standing Wave)?Pg256

🎯 Why Focus on 3-Mark Questions in 11th Physics?
Two-mark questions are direct, scoring, and test fundamental understanding of physics concepts. Answering them correctly can boost your overall marks significantly.

📚 Types of 3-Mark Questions in Physics:
🔹 Definition-Based Questions – Laws, Theorems & Principles
🔹 Formula-Based Questions – Key Equations & SI Units
🔹 Conceptual Questions – Short Explanations of Physical Phenomena
🔹 Diagram-Based Questions – Ray Diagrams, Graphs & Circuit Symbols

📢 More 11th Physics Exam Resources:
📘 11th Physics Formula Sheet & Theorems
📗 11th Physics Public Exam Answer Keys
📚 11th Physics Blueprint & Marking Scheme

📢 External References for 11th Physics Preparation:
🔗 Tamil Nadu 11th Public Exam Timetable 2025 – DGE TN
🔗 11th Physics Online Textbook – TN SCERT

🚀 Prepare Smart & Score High! Visit Padidaa.com for 11th Physics Study Materials, Public Exam Guides, and Expert Video Lessons. 📚