◆ తరంగాలు
◆ WAVE OPTICS
◆ RAY OPTICS & OPTICAL INSTRUMENTS
◆ ELECTRIC CHARGES & FIELDS
◆ ELECTROSTATIC POTENTIAL & CAPACITANCE
◆ CURRENT ELECTRICITY
◆ MOVING CHARGES & MAGNETISM
◆ ATOMS
◆ DUAL NATURE OF RADIATION & MATTER
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