A spherical asteroid having the same density as that of earth is floating in free space. A small pebble is revolving around the asteroid under the influence of gravity near the surface of the asteroid. What is the approximate time period of the pebble?

  • A

    $24\ h$

  • B

    $365\ days$

  • C

    $10\ min$

  • D

    $1\ hr\ 24\ min$

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