Which of the following graphs represent the input characteristics of a common emitter transistor correctly?

The current gain for a transistor used in the common-emitter configuration is $98.$ If the load resistance be $1 \mathrm{M\Omega }$ and the internal resistance be $600 \mathrm{\Omega },$ what is the voltage gain?

An $n$-$p$-$n$ transistor circuit is arranged as shown. It is a

In the following common emitter configuration, an n-p-n transistor, with current gain $\beta =100$, is used. The output voltage of the amplifier will be

ln the circuit shown, the transistor used has a current gain of $\beta =100$. What should be the base resistor $R_{\mathit{b}}$ so that,$V_{\mathit{C}\mathit{E}}=5 \mathrm{V}, V_{\mathit{B}\mathit{E}}=0$?