The upper cut off frequency of an RC coupled amplifier mainly depends upon : 

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  1. inter-electrode and stray shunt capacitances
  2. coupling capacitor
  3. emitter bypass capacitor
  4. output capacitance of signal source

Answer (Detailed Solution Below)

Option 1 : inter-electrode and stray shunt capacitances
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आर-सी युग्मित बहुस्तरीय एम्प्लीफायर की ऊपरी विच्छेदन आवृत्ति इस प्रकार होता है,

\({f_{C - high}} = {f_2}\sqrt {{2^{1/n}} - 1}\)

जहाँ \({f_2} = \frac{1}{{2\pi RC}}\)

SSC JE EE basic electronics 2 D13

\(\begin{array}{l} {f_{C - high}} = {f_2}\sqrt {{2^{1/n}} - 1} \\ {f_{c - high}}\alpha \frac{1}{C} \end{array}\)

इसलिए ऊपरी विच्छेदन आवृत्ति आंतर-इलेक्ट्रोड और स्ट्रै शंट संधारित्र पर निर्भर करती है।

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