AP EAMCET · PHYSICS · Semiconductors
If the energy gap of a substance is 5.4 eV , then the substance is
- A Insulator
- B Conductor
- C \(p\)-type semiconductor
- D \(n\)-type semiconductor
Answer & Solution
Correct Answer
(A) Insulator
Step-by-step Solution
Detailed explanation
If energy gap, \(\mathrm{E}_{\mathrm{g}}\gt5 \mathrm{eV}\), then the substance is insulator.
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 spring has a spring constant \(200 \mathrm{Nm}^{-1}\). If it is stretched by \(1 \mathrm{~cm}\) then the potential energy stored in it isAP EAMCET 2023 Easy
- A uniform electric field of \(500 \mathrm{Vm}^{-1}\) is directed at \(30^{\circ}\) with the positive \(X\)-axis as shown in figure. The potential difference \(\left(V_B-V_A\right)\) if \(O A=3 \mathrm{~m}\) and \(O B=5 \mathrm{~m}\) is
AP EAMCET 2021 Hard - In a cold storage, ice melts at the rate of 2 kg per hour when the external temperature is \(20^{\circ} \mathrm{C}\). The minimum power output of the motor used to drive the refrigerator which just prevents the ice from melting is (latent heat of fusion of ice \(=80 \mathrm{cal} \mathrm{g}^{-1}\) )AP EAMCET 2024 Easy
- A region contains a uniform electric field \(\mathbf{E}=(10 \hat{\mathbf{i}}+30 \hat{\mathbf{j}}) \mathrm{Vm}^{-1} . A\) and \(B\) are two points in the field at \((1,2,0) \mathrm{m}\) and \((2,1,3) \mathrm{m}\), respectively. The work done when a charge of \(0.8 \mathrm{C}\) moves from \(A\) to \(B\) in a parabolic path isAP EAMCET 2016 Medium
- A ball is thrown upward from the ground with an initial speed of \(v\). At the same instant, another ball is dropped from a building of height \(20 \mathrm{~m}\). If the balls are at the same height after \(0.8 \mathrm{~s}\), then the magnitude of \(v\) is
(Take, acceleration due to gravity \(=10 \mathrm{~ms}^{-2}\) )AP EAMCET 2022 Medium - If four charges \(+12 \mathrm{nC},-20 \mathrm{nC},+32 \mathrm{nC}\) and -15 nC are arranged at the four vertices of a square of side \(\sqrt{2} \mathrm{~m}\), then the net electric potential at the centre of the square due to these four charges isAP EAMCET 2025 Medium
More PYQs from AP EAMCET
- The electron affinity values of elements \(A, B, C\) and \(D\) are respectively \(-135,-60,-200\) and \(-348 \mathrm{~kJ} \mathrm{~mol} \mathrm{~m}^{-1}\). The outer electronic configuration of element \(B\) isAP EAMCET 2010 Easy
- A body starts from rest with uniform acceleration and its velocity at a time of ' n ' seconds is ' \(v\) '. The total displacement of the body in the \(n^{\text {th }}\) and \((n-1)^{\text {th }}\) seconds of its motion isAP EAMCET 2025 Medium
- What is the molecular formula of the product formed when benzene is reacted with ethyl chloride in presence of anhydrous aluminium chloride?AP EAMCET 2004 Medium
- If a polygon of \(n\) sides has 275 diagonals. then \(n\) isAP EAMCET 2024 Easy
- The mean deviation from the mean of the series \((a),(a+d),(a+2 d), \ldots \ldots \ldots . .,(a+2 n d)\) isAP EAMCET 2020 Easy
- The efficiency of a Carnot's engine is \(25 \%\), when the temperature of sink is 300 K . The increase in the temperature of source required for the efficiency to become \(50 \%\) isAP EAMCET 2024 Easy