Question 123: Semiconductors and Logic Gates

Question

Given below are two statements :
Statement I : PN junction diodes can be used to function as transistor, simply by connecting two diodes, back to back, which acts as the base terminal.
Statement II : In the study of transistor, the amplification factor $$\beta$$ indicates ratio of the collector current to the base current.
In the light of the above statements, choose the correct answer from the options given below.

Accepted Answer

S-1 :
Statement 1 is false because in case of two discrete back to back connected diodes, there are four doped regions instead of three and there is nothing that resembles a thin base region between an emitter and a collector.
S-2 :
Statement-2 is true, as we know that, amplification factor ($$\beta$$) is the ratio of collector current to base current.
$$\beta  = {{{I_C}} \over {{I_B}}}$$

Answer

Both Statement I and Statement II are false

Answer

Statement I is false but Statement II is true

Answer

Both Statement I and Statement II are true

Answer

Statement I is true but Statement II is false

Semiconductors and Logic Gates

Choose the correct answer: