If in Rutherford’s experiment, the number of particles scattered at ${90^o}$ angle are $28$ per min, then number of scattered particles at an angle ${60^o}$ and ${120^o}$ will be

  • A

    $112/min, 12.5/min$

  • B

    $100/min, 200/min$

  • C

    $50/min, 12.5/min$

  • D

    $117/min, 25/min$

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