Important two marks chapter wise

Ln1:

1. Distinguish between Fundamental and derived  quantity? Ln 1 Pg7
2. Give the uses of dimenstional analysis? Ln 1 Pg32
3. What are the limitations of dimentional analysis?Ln 1 pg34
4. Explain the principle of homogeneity of dimensions.Give Example?
5. Briefly explain the types of physical quantities?
6. What are the advantages of SI system of units?
7. Define precision and accuracy with an example?
8. What is dimensional constant ? Give examples?Ln1

Ln2:

1. Define Radian and Steradian ? Ln 2 Pg88
2. Write short note on the scalar product between two vectors? Ln2Pg53
3. What is meant by cartesian coordinate system?Ln2 Pg 42
4. Give the equations of motion for a particle falling vertically?Ln2 Pg77
5. Define vector,Give Examples?Ln2 Pg46
6. Define a scalar.Give Example?
7. What is meant by projectile?Give Example?
8. Define acceleration?Give its unit.
9. How do u dedice that two vectors are perpendicular?Ln2
10. Differentiate between scalar and vector?Ln2

Ln3:

1. State Lami’s Theorem?Ln 3 Pg129
2. Define One Newton? Ln 3 Pg106
3. Suggest few methods to reduce friction?Ln3 Pg145
4. Show that impulse is the change of momentum?Ln3 BB4 Pg162
5. What is mean by pseudo force? Ln 3 BB7 Pg153
6. What is range in projectile motion?
7. What is impulse?Give its unit?
8. under what condition will a car skid on a levelled circular road?
9. What is the condition for pure rolling?Ln3
10. State the emprical loss of static and kinetic friction?Ln3

Ln4:

1. What is elastic and ineleastic collision?Ln4 Pg193
2. Define power.Give its dimensional formula?Ln4 Pg190
3. Define one Newton?
4. What is co-efficient of restitution?

Ln5:

1. State the law of conservation of angular momentum?Ln5 Pg246
2. Distinguish between translational equilibrium and rotational equilibrium?Ln 5 Pg228
3. What are the conditions in which force can not produce torque?BB4
4. State principle of moments?q10
5. Define center of mass?Ln5
6. Define centre of gravity?Ln5

Ln6:

1. State newtons universal law of gravitation?Ln6 Pg4
2. State kepler’s law of period in planetary motion?
3. How will you prove that earth itself is spinning?
4. Will the angular momentum of a planet be conserved?Justify your answer?Q3
5. Why is there no lunar eclipse and solar eclipse every month?Ln6
6. What is meant by escape speed?Ln6

Ln7:

1. State Pascal’s Law in fluids?Ln 7 Pg63
2. Define Terminal velocity?Ln 7 Pg 69
3. Give any two uses of surface tension?Ln7 Pg81
4. Write any two factors affecting the surface tension of a liquid?
5. Define coefficient of viscosity of a liquid?
6. Define Poisson’s ratio?Pg58
7. State hookes law?Ln7
8. Which one of this is more elastic steel or rubber?Ln7

Ln8:

1. State wien’s law?Ln8 Pg 111
2. State Stefan-Boltzmann law. (Pg-111)
3. State Zeroth law of thermodynamics. (Pg-115)
4. Define one calorie. (Pg-118)
5. Define the quasi-static process. (Pg-120)
6. State the first law of thermodynamics. (Pg-119)
7. Define the quasi-static process. (Pg-120)
8. What is PV diagram? (Pg-122)
9. State Prevost theory of heat exchange. (Pg-111)
10. State stefan-Boltzmann law?
11. Define the coefficient of performance?
12. Discuss various modes of heat transfer?
13. Define molar specific heat capacity?Ln8

Ln9:

1. Define the term degree of freedom?Ln9 Pg173
2. What is meant by brownian motion?Ln 9 Pg179
3. State the law of equipartition of energy. (Pg-175)
4. List the factors affecting the mean free path. (Pg-178)
5. Define mean free path and write down its expression. (Pg-177,178) 
6. Why there is no hydrogen in the earth’s atmosphere?

Ln10:

1. Define time period of simple harmonic motion. (Pg-196)
2. What is meant by periodic and non-periodic motion? Give examples,for each motion.(Pg-189)
3. What is meant by free oscillation? (Pg-213)
4. Define simple harmonic motion (SHM). (Pg-190)
5. Define angular frequency. Give its unit. (Pg-196)
6. What is phase difference? (Pg-196)
7. What is an epoch?Ln10 Pg196
8. Define resonance.Give an Example?Ln10 pg214
9. If the length of the simple pendulum is increased by 44% from its original length, calculate the percentage increase in time period of the pendulum.
10. Moon has no atmosphere why?Pg170
11. Define frequency of simple harmonic motion?q4

Ln11 :

1. Write down the factors affecting velocity of sound in gases.
2. Write the relation between frequency wavelength and velocity of a wave?Ln11

🎯 Why Focus on 2-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 2-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

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