JEE Mains · Physics · STD 12 - 14. Semicondutor electronics
Statement \(I :\) When a Si sample is doped with Boron, it becomes \(P\) type and when doped by Arsenic it becomes \(N-\)type semi conductor such that \(P-\)type has excess holes and N-type has excess electrons. Statement \(II\) : When such \(P-\)type and \(N-\)type semi-conductors, are fused to make a junction, a current will automatically flow which can be detected with an externally connected ammeter. In the light of above statements, choose the most appropriate answer from the options given below.
- A Both Statement \(I\) and statement \(II\) are incorrect
- B Statement \(I\) is incorrect but statement \(II\) is correct
- C Both Statement \(I\) and statement \(II\) are correct
- D Statement \(I\) is correct but statement \(II\) is incorrect
Answer & Solution
Correct Answer
(D) Statement \(I\) is correct but statement \(II\) is incorrect
Step-by-step Solution
Detailed explanation
Statement\(-I\) is correct When \(P-N\) junction is formed an electric field is generated form \(N\)-side to \(P\)-side due to which barrier potential arises \& majority charge carrier can not flow through the junction due to barrier potential so current is \(zero\) unless we…
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Physics
- A man of \(60\,kg\) is running on the road and suddenly jumps into a stationary trolly car of mass \(120\,kg\). Then. the trolly car starts moving with velocity \(2\,ms ^{-1}\). The velocity of the running man was _________\(ms ^{-1}\). when he jumps into the carJEE Mains 2022 Medium
- Given below are two statements Statement \(I:\) The equivalent resistance of resistors in a series combination is smaller than least resistance used in the combination. Statement \(II\) : The resistivity of the material is independent of temperature. In the light of the above statements, choose the correct answer from the options given belowJEE Mains 2023 Medium
- A copper block of mass \(5.0\, kg\) is heated to a temperature of \(500^{\circ} C\) and is placed on a large ice block. What is the maximum amount of ice (ઇન \(kg\)) that can melt? [Specific heat of copper: \(0.39\, Jg ^{-1 \circ} C ^{-1}\) and latent heat of fusion of water : \(335 \,J g ^{-1}\) ]JEE Mains 2022 Medium
- A spring stretches by \(2\) mm when it is loaded with a mass of \(200\) g. From equilibrium position the mass is further pulled down by \(2\) mm and released. The frequency associated with the system and maximum energy in the spring are __________ Hz and __________ J, respectively. (Take g \(= 10\) m/s\(^2\))JEE Mains 2026 Hard
- The angular frequency of alternating current in a \(L-C-R\) circuit is \(100\, rad / s\). The components connected are shown in the figure. Find the value of inductance of the coil and capacity of condenser.
JEE Mains 2021 Hard - A concave mirror has radius of curvature of \(40\, cm\). It is at the bottom of a glass that has water filled up to \(5\, cm\) (see figure). If a small particle is floating on the surface of water, its image as seen, from directly above the glass, is at a distance \(d\) from the surface of water. The value of \(d\) is close to ......\(cm\) (Refractive index of water \(= 1.33\))
JEE Mains 2019 Hard
More PYQs from JEE Mains
- particle moves with simple harmonic motion in a straight line. In first \(\tau\ s\), after starting from rest it travels a distance \(a\), and in next \(\tau\ s\) it travels \(2a\), in same direction, thenJEE Mains 2014 Hard
- A mass of \(10\,kg\) is suspended vertically by a rope from the roof. When a horizontal force is applied on the rope at some point, the rope deviated at an angle of \(45^o\) at the roof point. If the suspended mass is at equilibrium, the magnitude of the force applied is .......... \(N\) \((g = 10\,ms^{-2})\)JEE Mains 2019 Medium
- Let \(\eta_{1}\) is the efficiency of an engine at \(T _{1}=447^{\circ}\,C\) and \(T _{2}=147^{\circ}\,C\) while \(\eta_{2}\) is the efficiency at \(T _{1}=947^{\circ}\,C\) and \(T _{2}=47^{\circ}\,C\). The ratio \(\frac{\eta_{1}}{\eta_{2}}\) will be.JEE Mains 2022 Medium
- Let the system of equations :
\(\begin{aligned}
& 2 x+3 y+5 z=9 \\
& 7 x+3 y-2 z=8 \\
& 12 x+3 y-(4+\lambda) z=16-\mu
\end{aligned}\)
have infinitely many solutions. Then the radius of the circle centred at \((\lambda, \mu)\) and touching the line \(4 x=3 y\) isJEE Mains 2025 Medium - Let \(S\) be the set of all \(\alpha \in R\) such that the equation, \(cos\,2 x + \alpha \,sin\, x = 2\alpha -7\) has a solution. Then \(S\) is equal toJEE Mains 2019 Hard
- Let \(S_{n}\) denote the sum of first \(n\)-terms of an arithmetic progression. If \(S_{10}=530, S_{5}=140\), then \(\mathrm{S}_{20}-\mathrm{S}_{6}\) is equal to :JEE Mains 2021 Medium