AIIMS2009Physics-Electronics
AIIMS 2009 Physics Amplifiers Assertion Reason Question
Type: Assertion Reason-numerical-Hard-Class 12
Assertion : In a common-emitter amplifier, the load resistance of the output circuit is 1000 times the load resistance of the input circuit. If α = 0.98, then voltage gain is 49 × 10³. Reason : α = β / (¹⁺ β) (symbols have their usual meaning).
A
Both Assertion and Reason are true and Reason is the correct explanation of Assertion.
B
Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
C
Assertion is true but Reason is false.
D
Both Assertion and Reason are false.
Correct Answer
Option C
Detailed Explanation
We know that α = ΔiC/ΔtF and β = ΔiC/ΔiB.
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