Assertion : In a transistor the base is made thin.
Reason: A thin base makes the transistor stable.

Options

A. If both assertion and reason are true and reason is the correct explanation of assertion.
B. If both assertion and reason are truw but reason is not correct explanation of assertion
C. If assertion is true but reason is false
D. If both assertion and reason are false.

Answer

C

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.Most of the holes coming from the emitter are able to diffuse through the base region to the collector region.