Question is ⇒ In a specimen of n type semiconductor, the initial concentration of holes and electrons is pno and nno. When the specimen is subjected to radiation, the hole and electron concentration increase to pn and nn. Then, Options are ⇒ (A) pn - pno = nn - nno, (B) pn + pno = nn + nno, (C) pn - pno = nno + nno, (D) pn + pno = nn - pno, (E) , Leave your comments or Download question paper.

Question is ⇒ In a specimen of n type semiconductor, the initial concentration of holes and electrons is pno and nno. When the specimen is subjected to radiation, the hole and electron concentration increase to pn and nn. Then, Options are ⇒ (A) pn - pno = nn - nno, (B) pn + pno = nn + nno, (C) pn - pno = nno + nno, (D) pn + pno = nn - pno, (E) , Leave your comments or Download question paper. Previous question Next question


Q1.	In a specimen of n type semiconductor, the initial concentration of holes and electrons is p_no and n_no. When the specimen is subjected to radiation, the hole and electron concentration increase to p_n and n_n. Then
A.	p_n - p_no = n_n - n_no [Correct Answer]
B.	p_n + p_no = n_n + n_no [Wrong Answer]
C.	p_n - p_no = n_no + n_no [Wrong Answer]
D.	p_n + p_no = n_n - p_no [Wrong Answer]
View Answer 1 -1 Explanation:- Answer : A Discuss it below : !! OOPS Login [Click here] is required to post your answer/result Help other students, write article, leave your comments

Previous question Next question

Also Read Similar Questions Below :

⇒ Microwaves are used for
telephony
radio broadcast
TV systems
all of the above

⇒ The greatest negative number which can be stored is 8 bit computer using 2's complement arithmetic is
-256
-128
-255
-127

⇒ In Pascal if I = 45, I div 10 * 10 =
45
40
0.45
0.4

⇒ A 3 stage Johnson counter shown in figure is clocked at a constant frequency of f_c from the starting state of Q₀ Q₁ Q₂ = 101. The frequency of output Q₀ Q₁ Q₂ wil
f_c/2
f_c/3
f_c/6
f_c/8

⇒ In measuring a resistance by voltmeter-ammeter method, the voltmeter can be connected either across supply or across the resistance. If the resistance is low, the voltmeters should be connected
across the supply
across the resistance
either in two positions
preferably across the supply

⇒ For a 400 kHz transmission line having L = 0.5 mH/km, C = 0.08 mF and negligible R and G, the value of propagation constant P will be
15.9 radians/km
31.8 radians/km
63.6 radians/km
105.4 radians/km

⇒ In FM, the frequency deviation is
always constant
directly proportional to modulating frequency
inversely proportional to modulating frequency
proportional to amplitude of modulating signal

⇒ Which one is correct option?

A pure capacitor never dissipates energy, but only stores.
Capacitor can store finite amount of energy even cunent is zero.
The current through a capacitor is zero if voltage across it d.c.
Voltage across a capacitor cannot change instantaneously since it would require an infinite current.
q_c(0^-) = q_c(0⁺)

5, 4, 3, 2
3, 4, 1, 2
2, 4, 3, 1
1, 2, 3, 4, 5

⇒ An RC impadence function has a pole at s = 0. The first element in the Foster form of synthesis
is R
may be R and C
is C
is R and C in parallel

⇒ In 8085, the pins for SID and SOD are
4 and 5 respectively
5 and 4 respectively
3 and 4 respectively
4 and 3 respectively

⇒ The intermediate frequencies in VCR are
video 38.9 MHz and audio 33.4 MHz
38.9 MHz for both video and audio
33.4 MHz for both video and audio
33.4 MHz for video and 38.9 MHz for audio

⇒ DVD uses
Laser beam for both recording and playback
Laser beam for recording and video head for playback
Video head for recording and laser beam for playback
None of the above

⇒ A single phase half wave rectifier circuit has a free wheeling diode. The free wheeling diode will conduct only if
load is purely resistive
load is purely inductive
load is combination of R and L
load is purely inductive or combination of R and L

⇒ In which of the following semiconductor are holes majority carriers
intrinsic
extrinsic
p type
n type

⇒ A klystron amplifier generally uses Pierce gun
TRUE
FALSE

⇒ HVDC systems are preferable for only long distances.
TRUE
FALSE

⇒ An RLC series circuit is fed form 100 V ac supply. Inductance is 1 H and Q = 7.5. At resonance, the voltage across inductance is
750 V
100 V
about 13.5 V
1500 V

⇒

Assertion (A): If the resistance of shunt of an ammeter is increased, the range of ammeter is reduced.

Reason (R): If the series resistance of a voltmeter is increased, the range of voltmeter is increased.

Both A and R are true and R is correct explanation of A
Both A and R are true but R is not correct explanation of A
A is true R is false
A is false R is true

⇒ An m derived and constant k filter section connected in cascade give
proper impedance matching
proper phase shift characteristic
proper attenuation characteristic
all of the above

⇒ A coil has a resistance of 2 Ω and inductance of 0.1 mH. The applied voltages is suddenly increased from 10 V to 20 V. After steady state condition have reached, the current is
0.0833333333333333
more than 2 A but less than 4 A
0.166666666666667
more than 4 A

⇒ In a single phase half wave converter feeding resistive load and full wave converter (M - 2 connection) feeding a resistive load the circuit conditions are similar. The firing angle is a. Then the waveshapes of voltages across thyristors
are similar
are not similar
may be similar or dissimilar
are similar only for some values of a

⇒ In bridge circuit of figure, equivalent resistance between A and B
1 Ω
0.5 Ω
2 Ω
1.5 Ω

⇒ A sinusoidal voltage is written as v = I_m (R² + X_C²)^0.5 sin 314 t. Its peak value and frequency are
I_m and 50
I_m (R₂ + X²_C)^0.5 and 50
0.707 I_m (R₂ + X²_C)^0.5 and 50
2 I_m (R₂ + X²_C)^0.5 and 50

⇒

Assertion (A): Stubs, directional couplers and baluns are very commonly used in communication systems

Reason (R): Characteristic impedance of a line is an important parameter.

Both A and R are correct and R is correct explanation of A
Both A and R are correct but R is not correct explanation of A
A is correct but R is wrong
A is wrong but R is correct

⇒ Data are recorded on a 2, 400 ft reel of magnetic tape at a density of 556 characters per inch. If the record length is of 100 characters and 0.75 inch of record gap, the tape utilization factor is
0.85
0.67
0.19
0.08

⇒ The effect of the inductance of a coil on a constant direct current is that
it does not effect the constant direct current
it decreases the current
it strengthens the current
it causes a higher voltage drop

⇒ The selectivity curve of a standard receiver is represente
curve A
curve B
curve C
curve D

⇒ Consider the following statements

If ensemble and time averages of a random process are identical, the process is ergodic.
If ensemble and time average of a random process are not identical, the process is ergodic.
An ergodic process is stationary.
A stationary process is necessarily ergodic.

Which of the above statements are correct?
1 only
1 and 3 only
1, 3 and 4 only
1 and 4 only

⇒ Consider a 565 PLL with R_T = 10 kΩ and C_T = 0.01 μF. What is the output frequency of the VCO?
10 kHz
5 kHz
2.5 kHz
1.25 kHz

⇒ The core of a solenoid is made of material of relative permeability μ_r. A small cavity area dA and length dl is cut in the core. If it is desired that flux density in the cavity should be equal to B₀
the fields inside and outside the cavity must be equal
the field inside the cavity must be made stronger than field outside the cavity
the field inside the cavity must be made weaker than the field outside the cavity
none of the above