MCQ
When phosphorus and antimony are mixed in zermaniun, then
- A$P-$type semiconductor is formed
- ✓$N-$type semiconductor is formed
- CBoth $(a)$ and $ (b)$
- DNone of these
✓
Answer
Correct option: B.
$N-$type semiconductor is formed
b
(b)Antimony and phosphorous both are pentavalent.
(b)Antimony and phosphorous both are pentavalent.
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
The $r.m.s.$ speed of the molecules of a gas in a vessel is $400$ $m{s^{ - 1}}$. If half of the gas leaks out, at constant temperature, the $r.m.s.$ speed of the remaining molecules will be ..... $ms^{-1}$
→Two blocks of mass $2\ kg$ and $1\ kg$ are connected by an ideal spring on a rough surface. The spring in unstreched. Spring constant is $8\ N/m$ . Coefficient of friction is $μ = 0.8$ . Now block $2\ kg$ is imparted a velocity $u$ towards $1\ kg$ block. Find the maximum value of velocity $'u'$ of block $2\ kg$ such that block of $1\ kg$ mass never move is
→A heater draws a current of $2\,A$ when connected to a $250\,V$ source. The rate of energy dissipation is ............. $W$
→A projectile is fired from horizontal ground with speed $v$ and projection angle $\theta$. When the acceleration due to gravity is $g$, the range of the projectile is $d$. If at the highest point in its trajectory, the projectile enters a different region where the effective acceleration due to gravity is $g^{\prime}=\frac{g}{0.81}$, then the new range is $d^{\prime}=n d$. The value of $n$ is. . . . .
→A train moves from one station to another in $2$ hours time. Its speed-time graph during this motion is shown in the figure. The maximum acceleration during the journey is.............$km\, h^{-2}$
→Potential energy of a particle varies with distance $x$ as shown in the graph Select the wrong statement
→A $6.0\,volt$ battery is connected to two light bulbs as shown in figure. Light bulb $1$ has resistance $3\,ohm$ while light bulb $2$ has resistance $6\,ohm.$ Battery has negligible internal resistance. Which bulb will glow brighter?
→A square plate of side $'a'$ is placed in $xy$ plane having centre at origin if charge density of square plate is $\sigma = xy$ then. Total charge on the plate will be
→A body dropped from the top of a tower covers a distance $7 x$ in the last second of its journey, where $x$ is the distance covered in first second.$.........\,s$ time does it take to reach the ground.
→Proton $(P)$ and electron $(e)$ will have same deBroglie wavelength when the ratio of their momentum is (assume, $m _{ p }=1849\,m _{ e }$)
→