Match the semiconductor devices with their corresponding characteristic graphs labeled \(\mathrm{(a),(b),(c)}\) and \(\mathrm{(d)}.\)
   
Select the correct sequence from the options given below:

The reverse breakdown voltage of a Zener diode is \(5.6~\text{V}\) in the given circuit.

The current \(I_Z\) through the Zener is:
1. \(7~\text{mA}\)
2. \(10~\text{mA}\)
3. \(17~\text{mA}\)
4. \(15~\text{mA}\)

The figure shows a voltage regulator circuit using a Zener diode. The breakdown voltage of the Zener diode is \(6~\text{V},\) and the load resistance is \(R_L=4 ~\text{k}\Omega.\) The series resistance in the circuit is \(R_i=1 ~\text{k} \Omega.\) If the battery voltage \(V_B\)​ varies from \(8~\text{V}\) to \(16~\text{V},\) what are the minimum and maximum values of the current through the Zener diode?

If a semiconductor photodiode can detect a photon with a maximum wavelength of \(400~\text{nm},\) then the energy of its band gap is:
(take Planck’s constant \(h=6.63 \times 10^{-34} \text { J-s }\) and speed of light \(c=3 \times 10^8\) m/s)
1. \(3.1~\text{eV}\)
2. \(1.1~\text{eV}\)
3. \(2.0~\text{eV}\)
4. \(1.5~\text{eV}\)

Take the breakdown voltage of the Zener diode used in the given circuit as \(6~\text{V}\). For the input voltage shown in figure below, the time variation of the output voltage is: (Graphs drawn are schematic and not to scale)

1.		2.
3.		4.

With increasing biasing voltage of a photodiode, the photocurrent magnitude: