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What happens when

1) Phosphorous is added to pure silicon
2) Aluminium is added to pure silicon
3) A.C is passed into Dipole Antenna
please reply as soon as possible


The Brainliest Answer!
1)When Phosphorous is added to pure silicon it becomes a N- type semiconductor
2)When aluminium is added to pure silicon  it becomes a P- type semiconductor
3)When A.C is passed into dipole antenna it emits electromagnetic radiations.

2 4 2
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