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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., , Deleted Topics : Basic idea of displacement current,

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Ch - 9 Ray Optics and Optical Instruments, , Refraction of light, total internal reflection and its applications,, optical fibers, refraction at spherical surfaces, lenses, thin lens, formula, lensmaker's formula, magnification, power of a lens,, combination of thin lenses in contact, refraction of light through a, prism, , Optical instruments: Microscopes and astronomical telescopes, (reflecting and refracting) and their magnifying powers.., , Deleted Topics : Reflection of light, spherical mirrors,, (recapitulation) mirror formula,, , Scattering of light - blue colour of sky and reddish appearance, of the sun at sunrise and sunset., , Resolving power of microscope and astronomical telescope,

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Ch - 10 Wave Optics, , Wave front and Huygen's principle, reflection and refraction, of plane wave at a plane surface using wave fronts., , Proof of laws of reflection and refraction using Huygen's, principle., , Interference, Young's double slit experiment and, , expression for fringe width,, , Coherent sources and sustained interference of light,, diffraction due to a single slit, width of central maximum, , Deleted Topics : polarisation, plane polarised, , light, Brewster's law, uses of plane polarised light and, Polaroids.

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Ch - 11 Dual Nature of Radiation, , , , and Matter, , Dual nature of radiation, Photoelectric effect, Hertz and, Lenard's observations;, , Einstein's photoelectric equation-Particle nature of light., Experimental study of photoelectric effect, , Matter waves-wave nature of particles, de-Broglie, relation, , Deleted Topics : Davisson - Germer experiment