In the below circuit, the output frequency is 0.5 Mhz.C1 = 5nF, R4 = – McqOptions

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1.	In the below circuit, the output frequency is 0.5 Mhz.C1 = 5nF, R4 = 40kΩ, R3 = 20kΩ. Find the value of R.
A.	63Ω
B.	220Ω
C.	127Ω
D.	55Ω
Answer» B. 220Ω

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