KEAM 2019 Physics and Chemistry Paper

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Question : 66 of 120

Marks: +1, -0

Instantaneous power delivered to a damped harmonic oscillator (natural frequency is w0) by an external periodic force (driving frequency w) under steady state conditions is

positive always
negative always
positive and negative with power integrated over a period being zero
positive and negative with power integrated over a period being positive
positive and negative with power integrated over a period being negative

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