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(C) In a simple harmonic motion $(SHM)$,the kinetic energy $(K)$ and potential energy $(U)$ of a particle vary with time as it oscillates about its me

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Sum of kinetic energy and potential energy

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(C) In a simple harmonic motion $(SHM)$,the kinetic energy $(K)$ and potential energy $(U)$ of a particle vary with time as it oscillates about its mean position.However,the total mechanical energy $(E = K + U)$ of the particle remains constant throughout the motion,provided there is no external dissipative force (like friction or damping).Therefore,the sum of kinetic energy and potential energy is an invariant quantity for a particle executing simple harmonic oscillations.

When a longitudinal wave propagates through a medium,the particles of the medium execute simple harmonic oscillations about their mean positions. These oscillations of a particle are characterised by an invariant

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