CBSE Class 12 Semiconductor Electronics Materials Devices and Simple Circuits Multiple Choice Questions with Answers. MCQ Questions Class 12 Semiconductor Electronics Materials Devices and Simple Circuits with Answers Is Prepared Based on Latest Exam Pattern. Students can solve NCERT Class 12 Semiconductor Electronics Materials Devices and Simple Circuits MCQs with Answers to know their preparation level.
Students who are searching for NCERT MCQ Questions for Class 12 Semiconductor Electronics Materials Devices and Simple Circuits with Answers are compiled here to get good practice on all fundamentals. Know your preparation level on MCQ Questions for Class 12 Semiconductor Electronics Materials Devices and Simple Circuits with Answers. You can also verify your answers from our provided MCQ Class 12 Semiconductor Electronics Materials Devices and Simple Circuits with Answers. So, ace up your preparation with MCQ of Class 12 Physics Examinations.
MCQ Questions Class 12 Semiconductor Electronics Materials Devices and Simple Circuits with Answers - Set - 3
Question 1:
To obtain p-type silicon semiconductor, we need to dope pure silicon with:
(a) aluminium
(b) phosphorus
(c) oxygen
(d)germanium
Correct Answer – (A)
Question 2 :
In reverse biasing:
(a) large amount of current flows
(b) no current flows
(c) potential barrier across junction increases
(d) depletion layer resistance increases
Correct Answer – (C)
Question 3 :
In a p-type semiconductor, current conduction is by:
(a) atoms
(b) holes
(c) electrons
(d) protons
Correct Answer – (B)
Question 4 :
Semiconductors of both p-type and n-type are produced by:
(a) ionic solids
(b) covalent solids
(c) metallic solids
(d) molecular solids
Correct Answer – (B)
Question 5 :
Bonds in a semiconductor :
(a) trivalent
(b) covalent
(c) bivalent
(d) monovalent
Correct Answer – (B)
MCQ Questions Class 12 Semiconductor Electronics Materials Devices and Simple Circuits with Answers
Question 6 :
Main function of a transistor is to :
(a) rectify
(b) simplify
(c) amplify
(d) all the above
Correct Answer – (C)
Question 7 :
The relation between number of free electrons (n) in a semiconductor and temperature (T) is given by:
(a) n ∝ T
(b) n ∝ T²
(c) n ∝ T1/2
(d) n ∝ T3/2
Correct Answer – (D)
Question 8 :
With fall of temperature, the forbidden energy gap of a semiconductor
(a) increases
(b) decreases
(c) sometimes increases and sometimes decreases
(d) remains unchanged
Correct Answer – (D)
Question 9 :
Number of electrons in the valence shell of a semiconductor is:
(a) 1
(b) 2
(c) 3
(d) 4
Correct Answer – (D)
Question 10 :
A truth table is given below. Which of the following has this type of truth table?
(a) XOR gate
(b) NOR gate
(b) AND gate
(d) OR gate
Correct Answer – (B)
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