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JEE PHYSICS MCQ: SEMI CONDUCTOR DEVICES
1
Medium
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Understanding
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Assertion: Positive feedback is essential for converting a transistor into an oscillator.
Reason: Positive feedback works between cut-off and saturation region.
Reason: Positive feedback works between cut-off and saturation region.
View answer and explanation
Correct option: B
If both Assertion and Reason are true, but Reason is not the correct explanation of Assertion
Option B is correct because while both the assertion and reason are true, the reason doesn't directly explain why positive feedback is essential for an oscillator. Positive feedback is needed to sustain oscillations, but the cut-off and saturation region is not the primary reason.
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