JEE Main202124 Feb 2021Evening ShiftPhysicsSemiconductorsActual
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 β 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.
Options
- ABoth Statement I and Statement II are false
- BStatement I is true but Statement II is false
- CStatement I is false but Statement II is true
- DBoth Statement I and Statement II are true
Correct answer
C. Statement I is false but Statement II is true
Step-by-step solution
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 β = I C I B