GATE2014-14

Question

The amplifier in the figure has gain of $-10$ and input resistance of $50\;k\Omega$. The values of $R_i$ and $R_f$ are:

• A. $R_i=500\;k\Omega, R_f=50\;k\Omega$
• B. $R_i=50\;k\Omega, R_f=500\;k\Omega$
• C. $R_i=5\;k\Omega, R_f=10\;k\Omega$
• D. $R_i=50\;k\Omega, R_f=200\;k\Omega$