CUET Preparation Today
On adding a small amount of boron to a silicon crystal |
boron becomes a donor atom its resistance is increased it becomes a n-type semiconductor it becomes a p-type semiconductor |
it becomes a p-type semiconductor |
The correct answer is Option (4) → it becomes a p-type semiconductor Boron has 3 valence electrons. When added to silicon (4 valence electrons), it creates “holes” by accepting electrons from silicon atoms. Thus, the silicon crystal doped with boron becomes a p-type semiconductor. Correct option: it becomes a p-type semiconductor |
