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Q.

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  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:

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a

Both Statement – I and Statement – II are false

b

Both Statement – I and Statement – II are true

c

Statement – I is false but Statement – II is true

d

Statement – I is true but Statement – II is false

answer is C.

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Detailed Solution

Two PN− junctions placed back to back cannot work as transistor because in transistor the width and concentration of doping of base is different than width and doping of other terminals.Current Gain is β=ICIB
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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  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: