CBSE Class ** Physics EXAM ****: Expected Questions

The Central Board of Secondary Education (CBSE) will be conducting its Board exams, like every year, in the month of March. For students belonging to class 12, who are appearing for the Physics exam, listed below are some important topics suggested by HOW to SCORE 95% MARKS in 12th BOARD Examinations 2016

Important topics:

Unit-1 (8 marks)

Electric charges and fields- concept based, derivation, application of Gauss Law

Electrostatic potential and capacitance- concept based, graph based, numerical

Unit-2 (7 marks)

Current Electricity- graph based (V-I, V-R), Kirchhoff's law and its application based problems, colour code resistance

Unit-3 (8 marks)

Moving charges and magnetism- Laws with derivation or numerical, Moving coil galvanometer or cyclotron based questions

Magnetism and Matter- Definitions based on earth's magnetic field or concept based, Identify the materials and draw variation, properties of materials

Unit-4 (8 marks)

Electromagnetic Induction- Faraday's Law and Lenz's Law, numerical problems, deduce expression, A.C. generator, transformer

Alternative Current- Average value and effective value, Phase relations b/w E and I, reactance, impedance, quality factor, resonance, power of LCR

Unit-5 (3 marks)

Electromagnetic waves- concept of displacement current, based on application of e.m. waves, finding the values of wavelength, direction of propagation

Unit-6 (14 marks)

Ray optics and optical instruments- Reflection, Derivation and numerical based on refractive index, lens formula, on combination of lenses/ lens mirror, power of lens, refraction through prism, concept based, compound microscope and telescope

Wave optics- Huygen's principle, derivation of interference, numerical based on diffraction/polarisation, concept based

Unit-7 (4 marks)

Dual nature of matter and radiation- Definition and statement, graph between different intensities- frequencies- stopping potential, numerical

Unit-8 (6 marks)

Atoms- Ionization energy, KE and PE of electron state, Bohr's concept based problems and derivations

Nuclei- Problems based on BE/ nucleon, plotting graph-inferences, concept based on decay

Unit-9 (7 marks)

Semiconductor devices- Junction diodes (circuit diagram, graphs), transistors (characteristics and circuit diagram), truth tables and combination of logic gates

Unit- 10 (5 marks)

Communication systems- Mode of communication, amplitude modulation/demodulation, block diagrams, mobile telephony and GPS.

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