MCQ
The curve between charge density and distance near $P-N$ junction will be
- ✓
- B
- C
- D
✓
Answer
Correct option: A.
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
Monica wanted to take photographs of a monument. But since the surrounding is filled with smoke, she is not able to take good photos. Which one of the following electromagnetic waves can be used in this situation to help Monica?
A parallel plate capacitor has a plate separation of 0.01 mm and use a dielectric (whose dielectric strength is 19 KV/mm) as an insulator. The maximum potential difference that can be applied to the terminals of the capacitor is (a) 190 V(b) 290 V(c) 95 V(d) 350 V
A thin metal plate P is inserted half way between the plates of a parallel plate capacitor of capacitance C in such a way that it is parallel to the two plates. The capacitance now becomes(a) C (b) C/2(c) 4C (d) None of these
Two magnets of same size and mass make respectively 10 and 15 oscillations per minute at certain place. The ratio of their magnetic moments is(a) 4 : 9(b) 9 : 4(c) 2 : 3 (d) 3 : 2
Ten grams of $^{57}Co$ kept in an open container beta$-$decays with a half$-$life of $270$ days. The weight of the material inside the container after $540$ days will be very nearly:
→If the output is taken across a capacitor in a series RLC circuit then it acts as.
Which of the following is the best insulator?
The coil of area $0.1 \mathrm{~m}^2$ has $500$ turns. After placing the coil in a magnetic field of strength $4 \times 10^{-4} \mathrm{wb} / \mathrm{m}^2,$ it rotated through $90^{\circ}$ in $0.1 s ,$ the average $\text{emf}$ induced in the coil is
→An unknown resistance $R_1$ is connected in series with a resistance of $10 W$. This combinations is connected to one gap of a metre bridge while a resistance $R_2$ is connected in the other gap. The balance point is at $50 \ cm$. Now, when the $10 W$ resistance is removed the balance point shifts to $40 \ cm$. The value of $R_1$ is $($in $ohm)$
→In an electron gun, the electrons are accelerated by the potential $V .$ If $e$ is the charge and $m$ is the mass of an electron, then the maximum velocity of these electrons will be
→