1 Answer

Answer :

Fermi energy is the amount of energy which Must be given to an electron to move it to conduction band.

Related questions

Description : what is fermi energy

Last Answer : Fermi energy is the part of electron band diagram.Fermi energy is highest energy that the electron assume at T = 0 K. Fermi level comes in between conduction band and valance band. In case of ... , In case of semiconductor energy gap is small, And in case of conductor energy gap is overlap.

Description : Which of the following properties distinguish a material as conductor, insulator and semiconductor? a) Free electron charges b) Fermi level after doping c) Energy band gap d) Electron density

Last Answer : c) Energy band gap

Description : Define (i) Intrinsic semiconductor (ii)Fermi energy level  

Last Answer : (i) Intrinsic semiconductor: The semiconductor in extremely pure form is called as intrinsic semiconductor.  (ii) Fermi energy level : The energy difference between conduction band and valence band is called as fermi energy level.

Description : What is the Fermi paradox?

Last Answer : The Fermi paradox is the apparent contradiction between the high probability of the existence of extraterrestrial civilizations, as suggested by the Drake equation, and the lack of evidence for their existence, and has been the subject of much speculation and debate.

Description : What is the Fermi-Dirac statistics?

Last Answer : The Fermi-Dirac statistics is a type of quantum statistics that describes the behavior of fermions, which are a type of subatomic particle that follow the rules of quantum mechanics, and are important in many areas of physics, including the behavior of electrons in solids.

Description : What is the Fermi paradox?

Last Answer : The Fermi paradox is the apparent contradiction between the high likelihood of the existence of extraterrestrial civilizations and the lack of evidence for their existence

Description : What is your solution to or thoughts on the Fermi paradox?

Last Answer : answer:The size of the universe combined with the age of the universe makes the probability ridiculous. Consider that humans have only had written communication (And by that I mean the ability to ... it makes sense to believe that there may be advanced intelligent life out there somewhere, somewhen.

Description : The Fermi Paradox asks, "Where is everybody?" Could intelligent life be mostly self extinguishing?

Last Answer : answer:It's a good piece, and the overall thesis is worth thinking about. Still, it seems to me that there are several alternatives to the pessimistic hypothesis that intelligent life extinguishes ... think about how far away a civilization in another solar system-or even another galaxy-would be.

Description : The name of the scientist who discovered neutron is - (1) Fermi (2) Rutherford (3) Chadwick (4) Bohr

Last Answer : (3) Chadwick Explanation: Sir James Chadwick, CH, FRS (20 October 1891 – 24 July 1974) was a British physicist who was awarded the 1935 Nobel Prize in Physics for his discovery of the neutron in 1932.

Description : Nuclear sizes are expressed in a unit named - (1) Fermi (2) Angstrom (3) Newton (4) Tesla

Last Answer : (1) Fermi Explanation: The fermi (1 fm = 10⁻¹⁵ m) is of the order of magnitude of the size of nucleons and nuclei, so it is more appropriate to describe sizes for nuclear phenomena.

Description : Neutron was discovered by - (1) Chadwick (2) Rutherford (3) Fermi (4) Bohr

Last Answer : (1) Chadwick Explanation: Neutron was discovered by James Chadwick in the year 1932. The neutron is a subatomic particle, symbol n or n⁰, with no net electric charge and a mass slightly larger than that of a proton. Protons and neutrons constitute the nuclei of atoms.

Description : The most suitable unit for expressing nuclear radius is - (1) nanometre (2) fermi (3) angstrom (4) micron

Last Answer : (2) fermi Explanation: The atomic radius is a measure of the size of an atom. It is defined as one half the distance between the nuclei of two identical atoms that are bonded together. Angstrom is the most common unit used for measuring atomic radius.

Description : Which unit we use to express nuclear sizes? (1) Tesla (2) Newton (3) Fermi (4) None of above

Last Answer : (3) Fermi

Description : Natural radioactivity was discovered by - (1) Marie Curie (2) Ernest Rutherfor (3) Henri Becquerel (4) Enrico Fermi

Last Answer : (3) Henri Becquerel Explanation: The Discovery of Radioactivity. In 1896 Henri Becquerel was using naturally fluorescent minerals to study the properties of xrays, which had been discovered in 1895 by Wilhelm Roentgen.

Description : Unit of radioactivity is (A) Barn (B) Fermi (C) Angstrom (D) Curie

Last Answer : (D) Curie

Description : The size of an atom is of the order of one (A) °Angstrom (B) Fermi (C) Micron (D) mm

Last Answer : (A) °Angstrom

Description : First experimental observation of nuclear fission was done by (A) Plane (B) Rutherford (C) Fermi (D) Hahn and Strassmann

Last Answer : (C) Fermi

Description : Unit of radioactivity is (A) Barn (B) Fermi (C) Angstrom (D) Curie

Last Answer : (D) Curie

Description : What “Enrico Fermi” invented? A. X ray machine B. Betatron C. Cyclotron D. Nuclear reactor (Answer)

Last Answer : D. Nuclear reactor (Answer)

Description : The dark lines constituting the absorption spectrum exhibited by sunlight are frequently called: A. Fresnel lines B. Fraunhofer lines C. Fermi lines D. Franklin lines

Last Answer : B. Fraunhofer lines

Description : The idea that we CANNOT know both the position and velocity of a subatomic particle at the same time was formulated by: w) Einstein x) Heisenberg y) Fermi z) Schroedinger

Last Answer : ANSWER: X -- HEISENBERG

Description : The dark lines constituting the absorption spectrum exhibited by sunlight are frequently called: w) Fresnel lines x) Fraunhofer lines y) Fermi lines z) Franklin lines

Last Answer : ANSWER: X -- FRAUNHOFER LINES

Description : Which of the following men was involved with the first controlled nuclear reaction? w) Linus Pauling x) Nelson Sartoris y) Edward Teller z) Enrico Fermi

Last Answer : ANSWER: Z -- ENRICO FERMI

Description : The random motion of particles suspended in a fluid is called: w) Boson Condensation x) Fermi Motion y) Brownian Motion z) Pauli Motion

Last Answer : ANSWER: Y -- BROWNIAN MOTION

Description : The most suitable unit for expressing nuclear radius is : (1) nanometre (2) fermi (3) angstrom (4) micron

Last Answer : angstrom

Description : In a single crystal of an intrinsic semiconductor, the number of free carriers at the Fermi level at room temperature is: A) Half the total number of electrons in the crystal B) Zero C) Half the number of atoms in the crystal D) Half the number of free electrons in the crystal

Last Answer : In a single crystal of an intrinsic semiconductor, the number of free carriers at the Fermi level at room temperature is: Zero 

Description : In an n-type semiconductor, as the donor concentration ND increases, the Fermi level EF: (1) Remains unaltered (2) Moves towards the conduction band (3) Move towards the center of forbidden energy gap (4) May or may not move depending on temperature 

Last Answer : In an n-type semiconductor, as the donor concentration ND increases, the Fermi level EF: Moves towards the conduction band

Description : Fermi level is the measure of  (A) Doping of electrons (B) Probability of occupancy of electrons or holes (C) Probability of occupancy of photons (D) Probability of occupancy of wavelength

Last Answer : (C) Probability of occupancy of photons