Download App

Electronics — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsElectronics1 Mark
MCQ
A hole in a P-type semiconductor is
  • A
    An excess electron
  • ✓
    A missing electron
  • C
    A missing atom
  • D
    A donor level
✓

Answer

Correct option: B.
A missing electron
 A missing electron

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 Electronics→Electronics — all question types→Physics STD 12 Science question papers→Gujarat Board STD 12 Science question papers→Gujarat Board question paper generator→

Similar questions

On applying a potential of $-1$  volt at the grid of a triode, the following relation between plate voltage $Vp$  (volt) and plate current ${I_p}({\rm{in }}mA)$ is found

${I_p} = 0.125\,{V_p} - 7.5$

If on applying $-3 $ volt potential at grid and $ 300 V$  potential at plate, the plate current is found to be $ 5mA$ , then amplification factor of the triode is

→
If a wave gets refracted into a denser medium, then which of the following is true?
→
Operational amplifier is a
→
Stopping potential for photoelectrons
→
Condenser $A$ has a capacity of $15\,\mu F$ when it is filled with a medium of dielectric constant $15$. Another condenser $B$ has a capacity of $1\,\mu F$ with air between the plates. Both are charged separately by a battery of $100\;V$. After charging, both are connected in parallel without the battery and the dielectric medium being removed. The common potential now is.....$V$
→
The difference of speed of light in the two media $A$ and $B\,\left(v_{A}-v_{B}\right)$ is $2.6 \times 10^{7}\,m / s$. If the refractive index of medium $B$ is $1.47$, then the ratio of refractive index of medium $B$ to medium $A$ is: (Given : speed of light in vacuum $\left.c =3 \times 10^{8}\, ms ^{-1}\right)$
→
Electron volt is a unit of
→
The critical angle of light going from medium $x$ to medium $y$ is $\theta$ . The speed of light in medium $x$ is $v$ . The speed of light in medium $y$ is
→
Doping of intrinsic semiconductor is done
→
A small telescope has an objective of focal length $140$ ~$cm$ and an eye piece of focal length $5.0 ~cm$. The magnifying power of telescope for viewing a distant object is:
→