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Recent questions tagged semiconductors
+2
votes
1
answer
If the lattice constant of this semiconductor is decreased, then which of the following is correct?
asked
Apr 4, 2019
in
JEE
by
kratos
semiconductors
semiconductor devices
jee
solids and semiconductor devices
+1
vote
1
answer
Estimate the proportion of boron impurity which will increase the conductivity of a pure silicon sample by a factor of 100.
asked
Mar 26, 2019
in
Class 12
by
kratos
semiconductors
semiconductor devices
class-12
+1
vote
1
answer
The impurity atoms with which pure silicon may be doped to make it a p-type semiconductor are those of (a) phosphorus
asked
Mar 22, 2019
in
Class 12
by
kratos
semiconductors
class-12
semiconductor devices
+2
votes
1
answer
The current conduction in a discharge tube is due to - (1) Electrons only (2) +ve ions and –ve ions
asked
Mar 7, 2019
in
Class 12
by
kratos
neet
electric current through gases
aiims
semiconductors
dual nature of radiation and matter
semiconductor devices
class-12
electric current in conductors
+2
votes
1
answer
An electric field of 40 V cm^–1 is applied to a semiconductor crystal. A small amount of ******** carriers are also injected
asked
Mar 2, 2019
in
Class 12
by
kratos
semiconductor electronics
neet
electronic device
semiconductors
semiconductor devices
class-12
+1
vote
1
answer
Name an element with which silicon may be doped to give a p-type semiconductor.
asked
Mar 1, 2019
in
Class 12
by
kratos
neet
electronic device
aiims
semiconductors
semiconductor devices
class-12
+3
votes
1
answer
Let f : A → B, IA and IB be identify functions on A and B respectively. Then prove that foIA = f = IBof.
asked
Feb 28, 2019
in
Class 12
by
kratos
motion of system of particles
class-11
rigid bodies
semiconductors
principles of inheritance and variation
rotational mechanics
semiconductor devices
class-12
+1
vote
1
answer
An n-p-n transistor in a common-emitter mode is used as a simple voltage-amplifier with a collector-current of 4mA.
asked
Feb 27, 2019
in
Class 12
by
kratos
semiconductor electronics
neet
jee
semiconductors
electronic devices
jee mains
semiconductor devices
class-12
+1
vote
1
answer
Show that AB+AB is always 1.
asked
Feb 23, 2019
in
Class 12
by
kratos
semiconductors
semiconductor devices
class-12
solids and semiconductor devices
+3
votes
1
answer
A p-type semiconductor has acceptor levels 57 meV above the valence band. The wavelength of light required to create a **** is :
asked
Feb 21, 2019
in
Class 12
by
kratos
semiconductor electronics
electronic device
semiconductors
semiconductor devices
class-12
+2
votes
1
answer
When a semiconducting material is doped with an impurity, new acceptor levels are created. In a particular thermal collision,
asked
Feb 19, 2019
in
Class 12
by
kratos
semiconductors
semiconductor devices
class-12
+1
vote
1
answer
Estimate the average drift speed of conduction electrons in a copper wire of cross-sectional area 1.0 × 10^–7 m^2 carrying a current of 1.5 A.
asked
Feb 15, 2019
in
JEE
by
kratos
cbse
electric current
resistance
semiconductors
jee mains 2019
semiconductor devices
class-12
current electricity
potential difference
+3
votes
1
answer
The product of the **** concentration and the conduction electron concentration turns out to be independent of the amount of any impurity doped.
asked
Feb 14, 2019
in
Class 12
by
kratos
semiconductors
semiconductor devices
class-12
+2
votes
1
answer
Electric conduction in a semiconductor takes place due to (a) electrons only
asked
Feb 13, 2019
in
Class 12
by
kratos
semiconductors
semiconductor devices
class-12
+3
votes
1
answer
The gap between the valence and conduction bands of a certain semiconductor is 0.85 eV.
asked
Feb 9, 2019
in
Class 12
by
kratos
conduction of electricity in solids
semiconductors
semiconductor devices
class-12
bitsat
+2
votes
1
answer
By increasing the temperature, the specific resistance of a conductor and a semiconductor.
asked
Jan 26, 2019
in
JEE
by
kratos
jee
semiconductor devices
solids and semiconductor devices
semiconductors
+1
vote
1
answer
Current of 4.8 amperes is flowing through a conductor. The number of electrons crossing a cross-section per second will be
asked
Jan 24, 2019
in
JEE
by
kratos
cbse
electricity
jee
semiconductors
class-10
jee mains
semiconductor devices
class-12
current electricity
+3
votes
1
answer
Draw the current-voltage characteristics for the device shown in figure (45-E7) between the terminals A and B.
asked
Jan 23, 2019
in
Class 12
by
kratos
semiconductors
semiconductor devices
class-12
+1
vote
1
answer
The impurity atoms with which pure silicon should be doped to make a n–type semiconductor are those
asked
Jan 22, 2019
in
JEE
by
kratos
electronic device
jee
semiconductors
jee mains
semiconductor devices
class-12
+1
vote
1
answer
What are the readings of the ammeters A1 and A2 shown in figure (45-E4). Neglect the resistances of the meters.
asked
Jan 22, 2019
in
Class 12
by
kratos
semiconductors
semiconductor devices
class-12
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