The Total solution for NCERT class 6-12
For transistor action, which of the following statementsare correct:
(a) Base, emitter and collector regions should have similarsize and doping concentrations.
(b) The base region must be very thin and lightly doped.
(c) The emitter junction is forward biased and collectorjunction is reverse biased.
(d) Both the emitter junction as well as the collectorjunction are forward biased.
The correct statement is (b), (c).
For a transistor action, the junction must be lightlydoped so that the base region is very thin. Also, the emitter junction must beforward-biased and collector junction should be reverse-biased.