Discussion
Assertion (A): Assertion: An astable multivibrator's frequency depends strongly on supply voltage.
Reason (R): Reason: Its capacitors charge towards the supply rail.
Select the correct answer from the options below.
Answer: D
The reason is true but the assertion is false: a higher supply charges the capacitor faster and also raises the voltage it must reach, so the two effects largely cancel and the period is nearly independent of supply. That cancellation is why the circuit works acceptably without a regulated supply. A mechanism that appears twice with opposite signs is worth tracing before concluding that a quantity matters.
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