$A$ semiconductor device is connected in a series circuit with a battery and a resistance. $A$ current is found to pass through the circuit. If the polarity of the battery is reversed,the current drops almost to zero. The device may be
- A$A$ $P-$type semiconductor
- BAn $N-$type semiconductor
- C$A$ $PN-$junction
- DAn intrinsic semiconductor
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In the given circuit,the input voltage $V_{\text{in}}$ is shown in the figure. The cut-in voltage of the $p-n$ junction diode ($D_{1}$ or $D_{2}$) is $0.6\,V$. Which of the following output voltage $(V_{0})$ waveforms across the diode is correct?
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