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14. Semicondutor electronics — Physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 SciencePhysics14. Semicondutor electronics1 Mark
MCQ
Which is the wrong statement in following sentences? A device in which $P $ and $N-$ type semiconductors are used is more useful then a vacuum type because
  • A
    Power is not necessary to heat the filament
  • B
    It is more stable
  • C
    Very less heat is produced in it
  • ✓
    Its efficiency is high due to a high voltage across the junction
✓

Answer

Correct option: D.
Its efficiency is high due to a high voltage across the junction
d
(d) Voltage drop across the junction is low.

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