Download App

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

Rajasthan BoardEnglish MediumSTD 12 SciencePhysicsSemiconductor Electronic: Material, Devices And Simple Circuits1 Mark
Question
In semiconductors, at a room temperature:
✓

Answer

  1. The valence band is partially empty and the conduction band is partially filled.
Explanation:
In semiconductors at room temperature the electrons get enough energy so that they are able to over come the forbidden gap. Thus at room temperature the valence band is partially empty and conduction band is partially filled.

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→Rajasthan Board STD 12 Science question papers→Rajasthan Board question paper generator→

Similar questions

A circular coil of $500$ turns of wire has an enclosed area of $0.1 \mathrm{~m}^2$ per turn. It is kept perpendicular to a magnetic field of induction $0.2 T$ and rotated by $180^\circ $ about a diameter perpendicular to the field in $0.1 \sec.$ How much charge will pass when the coil is connected to a galvanometer with a combined resistance of $50$ ohms
→
Two wires $A$ and $B,$ having identical geometrical construction, are stretched from their natural length by small but equal amount. The Young's modulus of the wires are $Y_A$ and $Y_B$ whereas the densities are $\rho_\text{A}>\rho_{\text{B}^+}$ It is given that $Y_A > Y_B$ and $\rho_\text{A}>\rho_{\text{B}^+}.$ A transverse signal started at one end takes a time $t_1$ to reach the other end for $A$ and $t_2$ for $B.$
→
A capacitor with no dielectric is connected to a battery at t = 0. Consider a point A in the connecting wires and a point B in between the plates.
→
Spherical aberration in a lens(a) Is minimum when most of the deviation is at the first surface(b) Is minimum when most of the deviation is at the second surface(c) Is minimum when the total deviation is equally distributed over the two surface (d) Does not depend on the above consideration
 
 
 
 
→
If a charged particle at rest experiences no electromagnetic force:
→
If a star can convert all the He nuclei completely into oxygen nuclei. The energy released per oxygen nuclei is [Mass of He nucleus is 4.0026 amu and mass of Oxygen nucleus is 15.9994 amu]:
→
The slits in a Young's double slit experiment have equal widths and the source is placed symmetrically relative to the slits. The intensity at the central fringes is $\mathrm{I}_0.$ If one of the slits is closed, the intensity at this point will be
→
In an electron gun the control grid is given a negative potential relative to cathode in order to:
→
A constant current of 2.8A exists in a resistor. The rms current is:
→
A radioactive sample is $a-$emitter with half life $138.6$ days is observed by a student to have $2000$ disintegration$/\sec$. The number of radioactive nuclei for given activity are
→