1. Draw a circuit diagram of OR gate. 2. What is a logic gate? 3. What types of charge-carriers are there in a n-type semi conductor? 4. Give the logical symbol of an AND gate. Mark the inputs and outputs. 5. Draw the logic symbol for a NAND gate. 6. Which biasing will make the…… Continue reading SEMICONDUCTOR DEVICES–CLASS 12 PHYSICS QUESTION BANK
“How is doping related with depletion layer of diode and how it increases the conductivity of semiconductor” – Nilotpal Arjun Asks Answer: As doping is increased, the width of depletion layer decreases as there will be enough electrons and holes available in a narrow region. The conductivity increases
HOTS Physics for Class12 The following questions banks were prepared by KVS. http://www.zietmysore.org/XII_physics.pdf http://www.zietmysore.org/stud_mats/XII/PHYSICS/unit1-electrostatics.pdf http://www.zietmysore.org/stud_mats/XII/PHYSICS/unit2-current.pdf http://www.zietmysore.org/stud_mats/XII/PHYSICS/unit3-mag.pdf http://www.zietmysore.org/stud_mats/XII/PHYSICS/unit4-emi.pdf http://www.zietmysore.org/stud_mats/XII/PHYSICS/unit5-emwave.pdf http://www.zietmysore.org/stud_mats/XII/PHYSICS/unit6-optincs.pdf http://www.zietmysore.org/stud_mats/XII/PHYSICS/unit7-dual.pdf http://www.zietmysore.org/stud_mats/XII/PHYSICS/atomic%20nuclei-hots8f.pdf http://www.zietmysore.org/stud_mats/XII/PHYSICS/unit9-semiconductor.pdf http://www.zietmysore.org/stud_mats/XII/PHYSICS/unit10-communication.pdf http://www.zietmysore.org/stud_mats/XII/PHYSICS/em%20wave-hots.pdf Find other dowloads here http://www.zietmysore.org/study.htm
Which of the following two circuits will give rectified output for the both the half cycles of a.c. input?
When an intrinsic semiconductor is doped with pentavalent impurity, the number of free lectrons increases. Will it result in any change in the number of holes already present? The answer is YES. When the semiconductor is doped with pentavalent impurity, the ne increases and will result in a decrease in nh according to the relation.…… Continue reading Law of mass action
Doping is the deliberate addition of desirable impurities to an intrinsic semicounductor to modify its conducting propertires. The impurity atoms added are called dopants and the semi conductor so formed is called extrinsic semiconductor. Depending on the type of impurities added, extrinsic semiconduictors are divided into two : n -type and p-type. Note: The extrememly…… Continue reading Doping
By doping the …