MCQ
A silicon speciman is made into a P-type semi-conductor by dopping, on an average, one Indium atom per $5 \times 10^7$ silicon atoms. If the number density of atoms in the silicon specimen is $5 \times 10^{28}$ atoms $/ m ^3$ then the number of acceptor atoms in silicon per cubic centimetre will be
  • A
    $2.5 \times 10^{30}$ atoms $/ cm ^3$
  • B
    $1.0 \times 10^{13}$ atoms $/ cm ^3$
  • $1.0 \times 10^{15}$ atoms $/ cm ^3$
  • D
    $2.5 \times 10^{36}$ atoms $/ cm ^3$

Answer

Correct option: C.
$1.0 \times 10^{15}$ atoms $/ cm ^3$
(c) $1.0 \times 10^{15}$ atoms $/ cm ^3$

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