In a forward-biased $P-N$ junction diode,how does the potential barrier behave?

$A$ waveform is applied to the following circuit. Assuming an ideal diode configuration and $R_1 = R_2$, which of the following output waveforms will be produced?

$A$ circuit is arranged as shown in the figure. The output voltage ${V}_{0}$ is equal to $\ldots \ldots \text{ V}$.

In a $PN$-junction diode,the reverse saturation current is ${10^{-5}} \ A$ at $27^\circ C$. Calculate the forward current for a voltage of $0.2 \ V$. Given: $[\exp(7.62) = 2038.6, \ k_B = 1.4 \times {10^{-23}} \ J/K, \ e = 1.6 \times {10^{-19}} \ C]$.

Which of the following figures represents a forward-biased diode?

For the diode,the characteristic curves are given at different temperatures. The relation between the temperatures is