$11\mathrm{.}86$ An amplifier having a low$-$frequency gain of $10*$ and poles at $103$ Hz and $10*$ Hz is operated in a closed negative$-$feedback loop with a frequency$-$independent B$.$

$$For what value of $$ do the closed$-$loop poles become coincident? At what frequency?

$$What is the low$-$frequency, closed$-$loop gain corresponding to the situation in $($a$)?$ What is the value of the closed$-$loop gain at the frequency of the coincident poles?

$$What is the value of Q corresponding to the situation in $($a$)?$

$$If $$ is increased by a factor of $10,$ what are the new pole locations? What is the corresponding pole Q$?$