Match the following
Silicon doped with electron-rich impurity forms .................
(a) P-type semiconductor (b) n-type semiconductor
(c) intrinsic semiconductor (d) insulator
Which of the following statements are true about semiconductors ?
(a) Silicon doped with electron rich impurity is a p-type semiconductor
(b) Silicon doped with an electron rich impurity is an n-type semiconductor
(c) Delocalised electrons increase the conductivity of doped silicon
(d) An electron vacancy increases the conductivity of n-type semiconductor