Special Purpose p-n Junction Diodes

Which of the following is/are correct

(i) The symbol  for zener diode is



(ii) The reverse I – V characteristics of a zener diode.

The following $I–V$ characteristics. Curve is of a:

In Zener diode, for currents greater than the knee current, the V-I curve is almost straight line_____ to x-axis.

Explain V-I characteristics of zener diode?

What is the principle of working of solar cell.

What is field ionisation?

What is the optoelectronic junction devices $?$

Solar cells are made of $:$

Photo diode used in reverse bias condition.

LED is a forward bias p-n junction diode.

In a photodiode,

A Zener diode, having breakdown voltage equal to $15 \mathrm{V}$, is used in a circuit shown in the figure. If the applied voltage is $20 \mathrm{V}$, the current through the Zener diode is $x \mathrm{mA}$. The value of $x$ is

Solar cell is a photodiode operated at

Identify characteristics are given below, in the order (i), (ii), (iii), (iv):
i.        ii.

iii.      iv.

List some uses of solar cell.

What is Light emitting diode?

Which of the characteristic curve are correct.

$\left(\mathrm{A}\right)$ Photodiode for $I_2>I_1$

$\left(\mathrm{B}\right)$ Solar cell

$\left(\mathrm{C}\right)$ L.E.D.

The reading corresponding to zener diode are given below in the table. From given table, determine the reverse breakdown voltage of the zener diode.

The NOR gate is OR gate followed by 

Which of the following is not true in the uses of LEDs over conventional incandescent bulb.