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Question: Answered & Verified by Expert
If $\alpha=0.98$ and current through emitter $i_c=20$ $m A$, the value of $\beta$ is
PhysicsSemiconductorsJEE Main
Options:
  • A 4.9
  • B 49
  • C 96
  • D 9.6
Solution:
1807 Upvotes Verified Answer
The correct answer is: 49
$\beta=\frac{\alpha}{1-\alpha}=\frac{0.98}{1-0.98}=49$.

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