p-n junction when reversed biased acts as a_______________?
(A) capacitor
(B) inductor
(C) on switch
(D) off switch
Semi-conductor germanium and silicon are_________________?
(A) pentavalent
(B) trivalent
(C) divalent
(D) tetravalent
Electrons present in p-type material due to thermal pair generation are_____________?
(A) majority carriers
(B) minority carriers
(C) dual carriers
(D) blockers
The velocity of laser light is___________________?
(A) Less than ordinary light
(B) More than ordinary light
(C) Equal to ordinary light
(D) Different for different colours or frequency
Reflecting mirrors in laser is used to______________?
(A) Further stimulation
(B) Lasing more
(C) For producing more energetic lasers
(D) All
The value of resistivity for insulator is of the order of____________?
(A) 105 ohm metre
(B) 106 ohm metre
(C) 107 ohm metre
(D) 108 ohm metre
Which one of following band is completely filled in case of conductors ?
(A) Conduction band
(B) Fermi band
(C) Valence band
(D) Forbidden band
Depletion region of a junction is formed_____________?
(A) during the manufacturing process
(B) under forward bias
(C) under reverse bias
(D) when temperature varies
In p-n-p transistor the collector current is________________?
(A) equal to emitter current
(B) slightly less than emitter current
(C) greater than emitter current
(D) any of above