The given graph represents the V-I characteristic for a semiconductor device.
Which of the following statement is correct?
|1.||it is a V-I characteristic for the solar cell where point A represents open-circuit voltage and point B short circuit current.|
|2.||it is for a solar cell and points A and B represent open-circuit voltage and current, respectively.|
|3.||it is for a photodiode and points A and B represent open-circuit voltage and current respectively.|
|4.||it is for a LED and points A and B represent open circuit voltage and short circuit current, respectively.|
A Zener diode, having a breakdown voltage equal to 15 V, is used in a voltage regulator circuit as shown in the figure. The current through the diode is :
1. 5 mA
2. 10 mA
3. 15 mA
4. 20 mA
A p-n photodiode is made of a material with a bandgap of 2.0 eV. The minimum frequency of the radiation that can be absorbed by the material is nearly: