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Physics 12 Physics 12
UNIT I: Electrostatics
- forces between multiple charges
- superposition principle and continuous charge distribution
UNIT II: Current Electricity
- flow of electric charges in a metallic conductor
- mobility
- V-I characteristics (linear and non-linear)
- carbon resistors
- colour code for carbon resistors
- temperature dependence of resistance
UNIT III: Magnetic Effects of Current and Magnetism
- Concept of magnetic field
- Oersted’s experiment
- cyclotron
UNIT IV: Electromagnetic Induction and Alternating Currents
- Self and mutual induction
- peak and RMS value of alternating current/voltage
- reactance and impedance
- LC oscillations (qualitative treatment only)
- resonance
UNIT V: Electromagnetic Waves
- Electromagnetic spectrum (radio waves, microwaves, infrared, visible, ultraviolet, X-rays, gamma rays) including elementary facts about their uses
UNIT VI: Optics
- Refraction of light
- Optical fibres
- refraction at spherical surfaces
- lenses
- lens-maker’s formula
- power of a lens
- Refraction and dispersion of light through a prism
UNIT VII: Dual Nature of Matter and Radiation
- Hertz and Lenard’s observations
- Einstein’s photoelectric equation - particle nature of light
UNIT VIII: Atoms and Nuclei
- energy levels
- hydrogen spectrum
- isotopes
- isobars
- Radioactivity - alpha
- beta and gamma particles/rays and their properties
- radioactive decay law
UNIT IX: Electronic Devices
- Energy bands in solids (qualitative ideas only)
- conductors
- insulators
- semiconductor diode - I-V characteristics in forward and reverse bias
- diode as a rectifier
BETA
