CDS Physics
Semiconductors — Quiz
20 Questions · No Negative Marking
Question 1
A semiconductor has electrical conductivity:
AMuch higher than metals
BBetween that of conductors and insulators
CMuch lower than insulators
DExactly equal to that of metals
Question 2
N-type semiconductor is formed by doping with:
ATrivalent impurities like boron or aluminium
BPentavalent impurities like phosphorus or arsenic
CBivalent impurities like magnesium
DNo impurities — pure semiconductor
Question 3
In a forward-biased p-n junction diode:
AThe barrier potential increases
BCurrent flows freely as barrier potential is
CNo current flows under any condition
DThe depletion layer widens
🔒
Unlock the Full Quiz
Get all 20 questions with answer options, instant scoring, and detailed explanations for every question — plus full access to all chapters, PDFs, and mock tests.
Unlock Full Access →
← Back