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Show that the total energy is conserved during LC oscillations.
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Prove that energy is conserved during electromagnetic induction.
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In a series LC circuit, the voltages across L and C are 180° out of phase. Is it correct? Explain.
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Two point white dots are 1 mm apart on a black paper. They are viewed by eye of pupil diameter 3 mm approximately. The maximum distance at which these dots can be resolved by the eye is, [take wavelength of light, λ = 500 nm]
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Prove laws of reflection using Huygens’ principle.
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Prove laws of refraction using Huygens’ principle.
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What is the shape of wavefront for point source?
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What is the shape of wavefront for line source?
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To obtain sustained oscillation in an oscillator,
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The variation of frequency of carrier wave with respect to the amplitude of the modulating signal is called ____________.
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What is modulation?
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Explain centre frequency or resting frequency in frequency modulation.
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Explain the amplitude modulation with necessary diagrams.
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List out the advantages and limitations of frequency modulation.
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What is meant by coherent sources?
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Explain in detail how charges are distributed in a conductor, and the principle behind the lightning conductor.
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Explain in detail the construction and working of a Van de Graaff generator.
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