Discussion
Assertion (A): Assertion: Adding stages always increases an amplifier's bandwidth.
Reason (R): Reason: Each stage taken alone has a wide bandwidth at low gain.
Select the correct answer from the options below.
Answer: C
The reason is true but the assertion is false: each stage may be wide, but their roll-offs compound and the combined 3 dB point falls below any single stage's. What extra stages buy is gain, at the price of bandwidth rather than in addition to it. A statement containing always is worth testing against the compounding effect, which is exactly the consideration this pair separates.
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