AIIMS2004Physics-Semiconductors
AIIMS 2004 Physics Transistors Assertion Reason Question
Type: Assertion Reason-assertion-Medium-Class 12
Assertion : In a transistor the base is made thin.
Reason : A thin base makes the transistor stable.
A
If both assertion and reason are true and reason is the correct explanation of assertion
B
If both assertion and reason are true but reason is not the correct explanation of assertion
C
If assertion is true but reason is false
D
If both assertion and reason are false
Correct Answer
Option C
Detailed Explanation
The base is lightly doped and very thin, this constructional feature is key of transistor action due to which only few holes (less than 5%) are able to combine with the electron in base region.
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