A beam of fast moving alpha particles were directed towards a thin film of gold. The parts $A',\;B'$ and $C'$of the transmitted and reflected beams corresponding to the incident parts $A, B$ and $C$ of the beam, are shown in the adjoining diagram. The number of alpha particles in

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  • A

    $B'$ will be minimum and in $C'$ maximum

  • B

    $A'$ will be maximum and in $B'$ minimum

  • C

    $A'$ will be minimum and in $B'$ maximum

  • D

    $C'$ will be minimum and in $B'$ maximum

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