Download App

Semiconductor Electronic: Material, Devices And Simple Circuits — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsSemiconductor Electronic: Material, Devices And Simple Circuits1 Mark
MCQ
In a semiconductor, which of the following statement is correct?
  • A
    At $0K$, Si is a super conductor.
  • B
    In a $p-$type semiconductor the acceptor level lies near the conduction band.
  • C
    Each donor atom contributes one hole.
  • ✓
    $p - n$ junction is electrically neutral.
✓

Answer

Correct option: D.
$p - n$ junction is electrically neutral.

Generally $Si$ is a semiconductor. In $p$ type semiconductor acceptor level lies near the valence band and each donor atom contribute one electron. $p-n$ junction electrically neutral because total charge is zero.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from Semiconductor Electronic: Material, Devices And Simple Circuits→Semiconductor Electronic: Material, Devices And Simple Circuits — all question types→Physics STD 12 Science question papers→Gujarat Board STD 12 Science question papers→Gujarat Board question paper generator→

Similar questions

$1:$ Primary waves can travel in all directions in an ether
$2:$ Secondary waves can travel only in backward in an ether
→
Which of the following gases has maximum $rms$ speed at a given temperature?
→
A pure semiconductor has equal electron and hole concentration of $10^{16} m ^{-3}$. Doping by gallium increases $n _{ h }$ to $5 \times 10^{22} m ^{-3}$. Then, the value of $n _{ e }$ in the doped semiconductor is
→
In the previous question, if the current is $i$ and the magnetic field at $D$ has magnitude $B$,
→
When an impurity is doped into an intrinsic semiconductor, the conductivity of the semiconductor:
→
In the network shown in the figure, each of the resistance is equal to $2\,\Omega $. The resistance between the points $A$ and $B$ is .............. $\Omega$
→
Monochromatic light of wavelength $667 \,\,nm$ is produced by a helium neon laser. The power emitted is $9 \,\,mW.$ The number of photons arriving per sec. on the average at a target irradiated by this beam is
→
Equal currents are flowing in three infinitely long wires along positive $x, y$ and $z$ direction. The magnetic field at a point $(0, 0, -a)$ would be ( $i =$ current in each wire)
→
Assertion : In the given circuit if lamp B or C fuses then light emitted by lamp A decreases.







Reason : Voltage on A decreases. 
→
For the angle of minimum deviation of a prism to be equal to its refracting angle, the prism must be made of a material whose refractive index 
→