MCQ
N-type semiconductors will be obtained, when germanium is doped with
  • A
    Phosphorus
  • B
    Aluminium
  • C
     Arsenic
  • Both (a) or (c)

Answer

Correct option: D.
Both (a) or (c)
 Both (a) or (c)

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

Similar questions

Radius of $_2^4 \mathrm{He}$ nucleus is 3 Fermi. The radius of $_{82}^{206} \mathrm{~Pb}$ nucleus will be
Which one of the following statements is true
A biconvex lens forms a real image of an object placed perpendicular to its principal axis. Suppose the radii of curvature of the lens tend to infinity. Then the image would
The critical angle of a certain medium is ${\sin ^{ - 1}}\,\left( {\frac{3}{5}} \right)$. The polarization angle is
In a Young's double slit experiment, the separation between the slits is $0.15\; \mathrm{mm}$. In the experiment, a source of light of wavelength $589 \;\mathrm{nm}$ is used and the interference pattern is observed on a screen kept $1.5\; \mathrm{m}$ away. The separation between the successive bright fringes on the screen is......$mm$
A series $R L C$ circuit is shown here. The source frequency $f$ is varied, but the current is kept unchanged. Which of the curves showing changes of $V_C$ and $V_L$ with frequency would be valid for  he circuit under consideration?
Two capacitances of capacity $C_1$ and $C_2$ are connected in series and potential difference V is applied across it. Then the potential difference across $C_1$ will be
If the potential difference between $B$ and $D$ is zero, the value of $x$ is $\frac{1}{n} \Omega$. The value of $n$ is .......
Which of the following statement is true
Three resistors of $4\,\Omega ,6\,\Omega $ and $12\,\Omega $ are connected in parallel and the combination is connected in series with a $1.5\, V$ battery of $1\,\Omega $ internal resistance. The rate of Joule heating in the $4\,\Omega $ resistor is ................ $W$