In a transistor if α = 0.9, β will be equal to—

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In a transistor if α = 0.9, β will be equal to—

1. 1.0
2. 0.09
3. 0.90
4. 9.0

Correct Option: D

Given α = 0.9
∴ β = α 1 – α = 0.9 1 – 0.9 = 9