Navigate

If a small amount of antimony is added to germanium crystal

If a small amount of antimony is added to germanium crystal

Options

(a) it becomes a p-type semiconductor
(b) the antimony becomes an acceptor atom
(c) there will be more free electrons than holes in the semiconductor
(d) its resistance is increased

Correct Answer:

there will be more free electrons than holes in the semiconductor

Explanation:

When small amount of antimony (pentavalent) is added to germanium crystal then crystal becomes n-type semi condcutor. Therefore, there will be more free electron than holes in the semiconductor.

AIPMT2011
admin:

Related Questions

  1. A point charge is kept at the centre of a metallic insulated spherical shell. Then
  2. The decay constant of a radio isotope is λ. If A₁ and A₂ are its activities at time
  3. Energy stored in the coil of a self inductance 40 mH carrying a steady current of 2A
  4. A source and an observer approach each other with same velocity 50 m/s. If the frequency
  5. When npn transistor is used as an amplifier