A metallic sphere cools from $50^{\circ} C$ to $40^{\circ} C$ in $300 \,s.$ If atmospheric temperature around is $20^{\circ} C ,$ then the sphere's temperature after the next $5$ minutes will be close to$.....C$

  • [JEE MAIN 2020]
  • A

    $33$

  • B

    $35$

  • C

    $31$

  • D

    $28$

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