railway DFCCIL Junior Executive 2023 (CBT 1 & CBT 2) Mock Test Physics Semiconductors Semiconductors
Which of the following statement is correct?
1
A p-type semiconductor is created by doping an intrinsic semiconductor with an acceptor impurity.
2
Sodium and Nitrogen are examples of the semiconductor.
3
An n-type semiconductor is created by doping an extrinsic semiconductor with a donor impurity
4
Silicon of Group IV has two valance electron.