The present updated syllabus keeps in view the rigour and depth of disciplinary approach as well as the comprehension level of learners. Due care has also been taken that the syllabus is comparable to the international standards. Electric field, electric field due to a point charge, electric field lines, electric dipole, electric field due to a dipole, torque on a dipole in uniform electric field. Chapter—2: Electrostatic Potential and Capacitance Electric potential, potential difference, electric potential due to a point charge, a dipole and system of charges; equipotential surfaces, electrical potential energy of a system of two point charges and of electric dipole in an electrostatic field. Conductors and insulators, free charges and bound charges inside a conductor. Dielectrics and electric polarisation, capacitors and capacitance, combination of capacitors in series and in parallel, capacitance of a parallel plate capacitor with and without dielectric medium between the plates, energy stored in a capacitor. Biot — Savart law and its application to current carrying circular loop. Straight and toroidal solenoids only qualitative treatmentforce on a moving charge in uniform magnetic and electric fields, Cyclotron. Force on a current-carrying conductor in a uniform magnetic field, force between two parallel current-carrying conductors-definition of ampere, torque experienced by a current loop in uniform magnetic field; moving coil galvanometer-its current sensitivity and conversion to ammeter and voltmeter. Para- dia- and ferro — magnetic substances, with examples. Electromagnets and factors affecting their strengths, permanent magnets. Unit V: Electromagnetic waves 04 Periods Chapter—8: Electromagnetic Waves Basic idea of displacement current, Electromagnetic waves, their characteristics, their Transverse nature qualitative ideas only. Electromagnetic spectrum radio waves, microwaves, infrared, visible, ultraviolet, X-rays, gamma rays including elementary facts about their uses. Scattering of light — blue colour of sky and reddish apprearance of the sun at sunrise and sunset. Optical instruments: Microscopes and astronomical telescopes reflecting and refracting and their magnifying powers. Matter waves-wave nature of particles, de-Broglie relation, Davisson-Germer experiment experimental details should be omitted; only conclusion should be explained. Mass-energy relation, mass defect; binding energy per nucleon and its variation with mass number; nuclear fission, nuclear fusion. Propagation of electromagnetic waves in the atmosphere, sky and space wave propagation, satellite communication. Need for modulation, amplitude modulation. Evaluation Scheme Time Allowed: Three hours Max. Mark the components that are not connected in proper order and correct the circuit and also the circuit diagram. It should contain a total of 15 practical skill based very short answer type questions. A student would be required to answer any 10 questions. Every question should require about two minutes to be answered. A student is expected to record at least five of the listed experiments as per the cbse class 12 syllabus 2019-19 pdf instructions for each subject. These practicals should be duly checked and signed by the internal examiner. Note: The above practicals may be carried out in an experiential manner rather than recording observations. However, there is an internal choice cbse class 12 syllabus 2019-19 pdf one question of 2 marks weightage, one question of 3 marks weightage and all the three questions of 5 marks weightage.
