Structure of Atom: 10th Physics Sub-atomic particle: Electron Proton Neutron Fundamental Atomic models: J.J Thomson Earnest Rutherford Neils Bohr What is Spectrum? Spectrum: A series of coloured bands separated and arranger in an order of their respective wavelengths. (or) A spectrum is a group of wavelengths. Example: Visible Spectrum (VIBGYOR) VIBGYOR V - Violet, I- Indigo, B- Blue, G - Green, Y - Yellow, O - Orange, R - Red Intensity: The amount of force or energy of heat, light, sound etc. Visible Spectrum: The range of wavelengths covering red colour to violet colour is called the visible spectrum. Red colour - High wavelength, Low frequency Violet Colour - Low Wavelength, High frequency Wave: A regularly repeated disturbance or displacement in a medium like air, water. Wave nature of light: Electromagnetic waves are produced when an electric charge vibrates (moves back and forth). for example, Visible light Visible light is an electromagnetic wave and the speed
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