XI- Physics ( 4.6 ), Relative velocity - by, Atma Academy. A. Prakash.

XI- Physics ( 4.5 ), Projectile Motion - by, Atma Academy. A. Prakash.

XI- 7.1 : Physics, Moment of Inertia ( 2 ) Theorems of moment of Inertia. Parallel axis theorem & perpendicular axis theorem., . BY- A. Prakash.

XI-Physics, NCERT Solutions, Chapter 2, Units & Measurements, Question 2.3. BY- Atma Academy.

XI-Physics, NCERT Solutions, Chapter 2, Units & Measurements, Question 2.15. BY- Atma Academy.

XI-Physics, NCERT Solutions, Chapter 2, Units & Measurements, Question 2.14. BY- Atma Academy.

XI-Physics, NCERT Solutions, Chapter 2, Units & Measurements, Question 2.5. BY- Atma Academy.

XI- 5.1: Physics, Friction by Atma academy.

XI- 8.2 : Physics , Relationships between "g and G", Variation in "g ', BY- A. Prakash.

XI- 7.2 : Physics, angular momentum & it's relationship with moment of Inertia. BY- A. Prakash.

XI- 7.5 : Physics, Motion of a rolling body, BY- A. Prakash.

XI- 9.1 : Physics, Elasticity, . BY- A. Prakash.

XI- : Physics, Centripetal Acceleration. BY- A. Prakash.

XI- 9.2 : Physics, Hooks law, Young's modulus, . BY- A. Prakash.

XI- Physics: 2.1-: Physical Quantities & Units , ( 2021), by A. Prakash

XI- 7.4 : Physics, Centre of mass, BY- A. Prakash.

XI- 9.3 : Physics, Bulk modulus & shearing modulus, . BY- A. Prakash.

XI- 15.3 : Physics: Equation of Plane Progressive wave, relationships between phase difference and path difference & phase difference and time difference. : BY- A. Prakash.

XI- 9.4 : Physics, Some important terms related to elasticity . BY- A. Prakash.

XI- 5.3 : Physics, Circular motion of a car on level road. BY- A. Prakash.