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A particle of mass ' \( m \) ' is moving in circular path of constant radius ' \( r \) ' such that centripetal acceleration is varying with time ' \( t \) ' as \( K^{2} r t^{2} \) where \( K \) is a constant. The power delivered to the particle by the force acting on it is
[MH CET 2015]
(a) \( m^{2} K^{2} r^{2} t^{2} \)
(b) \( m K^{2} r^{2} t \)
(c) \( m K^{2} r t^{2} \)
(d) \( m K r^{2} t \)
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