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Product of phase velocity and group velocity is equal to square of speed of light

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Energy distribution spectrum of black body radiation

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Derivation of torque on an electric dipole in an uniform and a non-uniform electric field

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Electric Dipole and Derivation of Electric field intensity at different points of an electric dipole

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Definition and Expression of escape velocity of an object on the planet

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Numerical Problems and Solutions of Centripetal Force and Centripetal Acceleration

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Variation of Acceleration Due to Gravity

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Total energy of an orbiting Satellite and its Binding Energy

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Expression for Orbital velocity of Satellite and Time Period

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Derivation of Gravitational Potential Energy due to Point mass and on the Earth