CBSE board deleted 30% of the syllabus from the total syllabus in all subjects and practicals due to the loss of the number of working days in the academic year 2020 (due to the COVID 19 pandemic). From practical, CBSE board removed the entire investigatory project and activities. In physic, the deleted topics in the syllabus are mentioned below.
Removed topics in Class 12 Physics - Lesson Wise
Chapter 1: Electric charges and field
Uniformly charged thin spherical shell. (inside and outside)
Chapter 2: Electric Potential and Capacitors
Nothing is removed from this chapter.
Chapter 3: Current Electricity
Carbon resistors, colour coding, series, and parallel combination of resistors.
Chapter 4: Moving Charges and Magnetism
Chapter 5: Magnetism and Matter
Many topics removed from this lesson. Those are
Magnetic field intensity due to a magnetic dipole (Bar magnet along its axis and equatorial), torque on a bar magnetic in a uniform magnetic field, para, dia, and ferromagnetic substances with examples, electromagnets, and factors affecting their strengths and permanent magnets.