CUET · PHYSICS · PYQ PAPER 2023
The forbidden energy band gap in conductors, semi conductors and insulators are \( E_{G1}, E_{G2} \) and \( E_{G3} \), respectively. The relation among them is
- A \( E_{G1} > E_{G2} > E_{G3} \)
- B \( E_{G1} < E_{G2} < E_{G3} \)
- C \( E_{G1} = E_{G2} = E_{G3} \)
- D \( E_{G1} < E_{G2} > E_{G3} \)
Answer & Solution
Correct Answer
(B) \( E_{G1} < E_{G2} < E_{G3} \)
Step-by-step Solution
Detailed explanation
Conductors \(\left(E_{G 1}\right)\) : There is zero or negligible band gap (bands often overlap), allowing electrons to flow freely. Semiconductors ( \(E_{G 2}\) ): There is a small band gap (typically \(<3 eV\) ), allowing some conduction at higher temperatures. Insulators (…
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
- An EMM wave travelling in vacuum is described by \(\overrightarrow{ E }= E _0 \sin ( k x -\omega t) \hat{ j }\) and \(\overrightarrow{ B }= B _0 \sin ( k x -\omega t) \hat{ k }\) Which of the following relation is true ?CUET 2023 Easy
- A constant voltage is applied across a wire of non-uniform area of cross-section. Which of the followings quantity is independent of the cross-section?CUET 2023 Medium
- The energy of electron in the first excited state of Hydrogen atom is -3.4 eV. The potential energy of this electron is :CUET 2023 Medium
- The drift velocity of electrons in a copper wire of length 2 m under the application of a potential difference of 200 V is \( 0.5 \text{ ms}^{-1} \). The mobility of electrons in \( \text{m}^2\text{V}^{-1}\text{s}^{-1} \) is :CUET 2023 Easy
- An infinite line of charge has a linear charge density of \(10^{-7} \text{ C m}^{-1}\). The magnitude of the force acting on a charge \(6.4 \times 10^{-19} \text{ C}\) kept at a distance of 8 cm from the line of charge isCUET 2025 Hard
- The resistance of the platinum wire of a platinum resistance thermometer at the ice point is 5 \(\Omega\) and at steam point, it is 5.23 \(\Omega\). When the thermometer is inserted in a hot bath, the resistance of the platinum wire becomes 5.795 \(\Omega\). Find the temperature of the bath.CUET 2023 Easy
More PYQs from CUET
- Un-decomposed silver bromide from developed film, in black and white photography, makes a complex with hypo. The formula of the complex isCUET 2025 Hard
- If \(R\) be a relation on the set of integers \(Z\), given by \(R=\{(a, b):(a-b)\) is a multiple of 3\(\}\), then \(R\) is :CUET 2025 Hard
- The fringe width in Young's double slit experiment is \( 2.4 \times 10^{-4} \, \text{m} \), when red light of wavelength 6400 \( \text{\AA} \) is used. The decrease in the fringe width, if light of wavelength 4000 \( \text{\AA} \) is used instead of red light, will be:CUET 2025 Hard
- In the following which plant is also called 'Terror of Bengal'?CUET 2023 Hard
- A cell is prepared by dipping a Cu rod in \(1\ M\ CuSO_4\) solution and Sn rod in \(1\ M\ SnCl_2\) solution.
The standard electrode potential of Cu is \(+0.34\ V\) and Sn is \(-0.14\ V\). Emf of cell will be :CUET 2023 Medium - Chloroform is largely used forCUET 2025 Hard