Given below are two statements:
**Statement I:** $p$-$n$ junction diodes can be used to function as a transistor, simply by connecting two diodes, back to back, which acts as the base terminal.
**Statement II:** In the study of transistors, 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.
Answer: (C) Statement I is false but Statement II is true
Two separate diodes joined back to back do not make a transistor: the base of a transistor must be very thin and lightly doped so that carriers cross it to the collector. Statement I is false.
$\beta = I_C/I_B$ is the current amplification factor. Statement II is true.
Solution by Sreeraj P, M.Sc Physics