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NEET 2010
Exam
NEET
Year
2010
Subject
Physics
Chapter
Semiconductors

NEET 2010 · Physics · Semiconductors

For transistor action (1) Base, emitter and collector regions...

For transistor action (1) Base, emitter and collector regions should have similar size and doping concentrations. (2) The base region must be very thin and lightly doped. (3) The emitter-base junction is forward biased and base-collector junction is reverse biased. (4) Both the emitter-base junction as well as the base collector junction are forward biased. Which one of the following pairs of statements is correct?

Options

  1. A(4) and (1)
  2. B(1) and (2)
  3. C(2) and (3)
  4. D(3) and (4)

Correct answer

C. (2) and (3)

Step-by-step solution

A transistor is mostly used in the active region of operation ie, emitter base junction is forward biased and collector base junction is reverse based. The base region must be very thin and lightly doped.
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