MCQ
The process of adding impurities to the pure semiconductor is called
- ADrouping
- BDrooping
- ✓Doping
- DNone of these
✓
Answer
Correct option: C.
Doping
Doping
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
A transformer operating at primary voltage $8\,kV$ and secondary voltage $160\,V$ serves a load of $80\,kW$. Assuming the transformer to be ideal with purely resistive load and working on unity power factor, the loads in the primary and secondary circuit would be.
→The graph that correctly represents the relation of frequency n of a particular characteristic X-ray with the atomic number Z of the material is
Scale used in moving coil galvanometer is:
Find linear magnification in the given diagram.
A proton (mass $ = 1.67 \times {10^{ - 27}}\,kg$ and charge $ = 1.6 \times {10^{ - 19}}\,C)$ enters perpendicular to a magnetic field of intensity $2$ $weber/{m^2}$ with a velocity $3.4 \times {10^7}\,m/\sec $. The acceleration of the proton should be
→Two short magnets of equal dipole moments $M $ are fastened perpendicularly at their centre (figure). The magnitude of the magnetic field at a distance $d $ from the centre on the bisector of the right angle is
→A microscope has an objective of focal length $1.5\, cm$ and an eye-piece of focal length $2.5\, cm$. If the distance between objective and eye-piece is $25\, cm$ the approximate value of magnification produced for relaxed eye is ?
→What is the molar mass of ammonium carbonate $\left(\mathrm{NH}_4\right)_2 \mathrm{CO}_3$?
→The internal resistance of a cell is the resistance of
1 g of hydrogen is converted into 0.993 g of helium in a thermonuclear reaction. The energy released is