A clock $S$ is based on oscillation of a spring and a clock $P$ is based on pendulum motion. Both clocks run at the same rate on earth. On a planet having the same density as earth but twice the radius

  • A

    $S$ will run faster than $P$

  • B

    $P$ will run faster than $S$

  • C

    They will both run at the same rate as on the earth

  • D

    None of these

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