first of all I would recommend to you to refer the official syllabus which are provided by nta and focus on those topics

Still I'm giving you a concise information about the topics of 11th and 12th physics

11th

1. Physical World and Measurement
   Includes units of measurement, system of units, SI units, fundamental and derived units, least count, significant figures, errors in measurements, dimensions of physical quantities, and dimensional analysis.

2. Kinematics
   Covers the frame of reference, motion in a straight line, position-time graph, speed and velocity, uniform and non-uniform motion, acceleration, motion equations, scalar and vector quantities, vector operations, unit vectors, projectile motion, and uniform circular motion.

3. Laws of Motion
   Focuses on force and inertia, Newton’s first law of motion, momentum, Newton’s second law of motion, impulse, Newton’s third law of motion, law of conservation of linear momentum and its applications, equilibrium of concurrent forces, static and kinetic friction, laws of friction, rolling friction, dynamics of uniform circular motion, centripetal force, and its applications.

4. Work, Energy, and Power
   Includes work done by a constant force and a variable force, kinetic and potential energies, work-energy theorem, power, potential energy of spring, conservation of mechanical energy, conservative and non-conservative forces, motion in a vertical circle, elastic and inelastic collisions in one and two dimensions.

5. Motion of System of Particles and Rigid Body
   Covers the center of mass of a two-particle system, center of mass of a rigid body, basic concepts of rotational motion, moment of a force, torque, angular momentum, conservation of angular momentum and its applications.

6. Gravitation
   Focuses on the universal law of gravitation, acceleration due to gravity, gravitational potential energy, escape velocity, and orbital velocity.

7. Properties of Bulk Matter
   Includes elasticity, stress-strain relationship, Hooke’s law, Young’s modulus, bulk modulus, shear modulus, and Poisson’s ratio.

8. Thermodynamics
   Covers thermal equilibrium, zeroth law of thermodynamics, heat, temperature, internal energy, first law of thermodynamics, second law of thermodynamics, and heat engines.

9. Behavior of Perfect Gas and Kinetic Theory
   Focuses on the ideal gas laws, kinetic theory of gases, and the concept of temperature.

10. Oscillations and Waves
    Includes periodic motion, simple harmonic motion, oscillations, wave motion, speed of a wave, and the principle of superposition

12th

1. Electrostatics
   Covers electric charges, Coulomb’s law, electric field, electric potential, capacitors, and dielectrics.

2. Current Electricity
   Includes electric current, Ohm’s law, resistivity, and Kirchhoff’s laws.

3. Magnetic Effects of Current and Magnetism
   Focuses on magnetic field, Ampere’s law, magnetic force, and magnetic properties of materials.

4. Electromagnetic Induction and Alternating Currents
   Covers Faraday’s law, Lenz’s law, self and mutual induction, and alternating current circuits.

5. Electromagnetic Waves
   Includes the nature of electromagnetic waves, their spectrum, and applications.

6. Optics
   Focuses on reflection, refraction, lenses, optical instruments, and wave optics.

7. Dual Nature of Matter and Radiation
   Covers the photoelectric effect, de Broglie wavelength, and matter waves.

8. Atoms and Nuclei
   Includes atomic models, radioactivity, nuclear reactions, and applications.

9. Electronic Devices
   Focuses on semiconductors, diodes, transistors, and their applications in electronic circuits.

For AFCAT (Flying Branch and Technical roles) , it’s compulsory to have Physics and Mathematics at 10+2 level with 50% each . If you did not study these subjects in Class 12 (Commerce stream), you don’t need to redo the entire 12th. Instead, you can appear for Physics and Mathematics as additional subjects through NIOS (National Institute of Open Schooling) . Once you pass both with the required marks, your eligibility will be valid. Just ensure the marksheet clearly reflects Physics and Maths as part of your 10+2 qualifications. This pathway is commonly used by non-science students aspiring for AFCAT.

Scoring 61% in Class 12 with 60% in Mathematics, Physics, and Chemistry opens up several university options, especially in Bengaluru. Institutions like Christ University and Bennett University typically require a minimum of 60% in aggregate for admission to their undergraduate programs . However, some universities may have specific subject-wise requirements. (https://www.bennett.edu.in/admission/eligibility-and-selection-criteria/?utm_source=chatgpt.com)

For example, BITS Pilani mandates at least 60% in each of Physics, Chemistry, and Mathematics, along with a 75% aggregate in these subjects . Similarly, IISERs require a minimum of 60% in aggregate in Class 12 for eligibility. (https://www.bitsadmission.com/fd/BITSAT_eligibility.html?06012025=&utm_source=chatgpt.com) (https://www.iiseradmission.in/examination/eligibility.html?utm_source=chatgpt.com)

It's advisable to check the specific eligibility criteria of each university you're interested in. Additionally, preparing for entrance exams like JEE Main or VITEEE can further enhance your admission prospects.

Unfortunately, failing in Physics during Class 12 makes you ineligible for B.Sc. Information Technology (IT) in most colleges. IT—and related science degrees like B.Sc. Computer Science—typically require Physics (along with Mathematics and Chemistry) as mandatory subjects in your 12th-grade qualification . Even if you passed overall by counting additional subjects, failing Physics still counts as not having passed the required core subject . The best path forward is to clear Physics through a compartment or improvement exam , then apply for IT or related B.Sc. programs once you have the necessary subject pass.