At absolute zero, Si acts as
non-metal
metal
insulator
None of these
To obtain a p-type germanium semiconductor, it must be doped with
phosphorus
indium
antimony
arsenic
The transfer ratio β of a transistor is 50. The input resistance of the transistor when used in the common emitter configuration is 1kΩ. The peak value of the collector AC current for an AC input voltage of 0.01V peak is
100 μA
0.01 mA
0.25 mA
500 μA
Which of the following when added as an impurity into silicon produces n-type semiconductor?
P
Al
B
Mg
When arsenic is added as an impurity to silicon, the resulting material is
n-type semiconductor
p-type semiconductor
n-type conductor
Which one of the following is the weakest kind of the bonding in solids?
Ionic
Metallic
Van der Waals'
Covalent
The following truth table belongs to which of the following four gates?
NOR
XOR
NAND
OR
Sodium has body centred packing. If the distance between two nearest atoms is 3.7 Å, then the lattice parameter is
3.3 Å
3.9 Å
4.3 Å
4.8 Å
