Physics – Semiconductor – TEST (MCQ Maharashtra 12th Board)
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#1. The materials most commonly used for solar cells?
#2. What is a transistor?
#3. Which of the following gates can act as building block for logic circuits?
#4. In a n-p-n transistor, what is the role of p-type semiconductor?
#5. In a p-n-p transistor the current produced is mainly due to
#6. A p-n junction diode cannot be used as
#7. If there is o electron in the conduction band of a solid at room temperature, it is
#8. In which of the following do holes exist?
#9. To create a p-type semiconductor from a pure semiconductor we can add
#10. A transistor produces good amplification in this configuration
#11. A solar cell converts sunlight into
#12. In a pure semiconductor like silicon, a p-type impurity creates
#13. Metal contain large number of free
#14. In forward-biased mode, a –p-n diode acts as
#15. Full wave rectifier requires
#16. Each covalent bond in a pure Silicon or Germanium has
#17. The number of bonds formed in a p-type and n-type semiconductor are
#18. What is the nature of the current output form a simple filter-less rectifier?
#19. What is an AND gate logically equivalent to? Parallel switching circuit
#20. Which effect is used in solar cells?