Calculate the density of thermionic emission current in Cs at 500 ,1000 ,2000 k°.

Q: Draw the Fermi distribution function at different temperatures

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Q: What is the electrostatic potential at the surface of d silver nucleus of diameter 12.3 fermi ?…

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Q: If levels 1 and 2 are separated by an energy E2 - E1 such that the corresponding transition…

A: Given *The temperature of thermal equilibirium is T=500kWe know that   The middle of the visible…

Q: 48 Show that P(E), the occupancy probability in Eq. 41-6, is sym- metrical about the value of the…

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Q: Show that the most probable speed of the Maxwell-Boltzmann distribution of molecular speeds is given…

A: To show that, the most probable speed of the Maxwell-Boltzmann distribution of molecular speed is…

Q: Calculate the Fermi energy and electron concentration at room temperature 300K

A: Here given the donor level energy Ed = 0.05 ev. Again Eg = 1.1 ev We have to calculate the Fermi…

Q: Consider a copper wire that is carrying, say, a few amperes of current. Is the drift speed vd of the…

A: The drift velocity is the average velocity that a particle, such as an electron, attains in a…

Q: Calculate the effective density of states for electrons and holes and intrinsic carrier…

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Q: A container of nitrogen is at 2.00atm of pressure and a temperature of 400K. If we -10 treat the…

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Q: 010/ At room temperature (300 K) with the Fermi level located exactly in the middle of the bandgap,…

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Q: Show that Kp = 0.75 nM is a DG = -50.8 kJ/mol. Express DG in terms of pN nm Compare the force…

A: Given: KD=0.75 nM=0.75×10-9m ∆G=-50.8 kJ/mol

Q: Plot the Fermi function Vs. Energy at the temperature of 500 K, when EF = 2 eV

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Q: The surlace of the Suy has a temperahure of about 5,800 k. The radius of the Sun is 6.96X108m.…

A: temperature of sun(T)=5800 K radius of sun(r)=6.96x108 m emissivity of sun(e)=0.986 area of…

Q: The probability of filling the band by• electrons 0.5 regardless to * temperature T, if E>Ef O E<Ef…

A: We have to select the most appropriate option for the case, where it is asked that what will be the…

Q: Calculate the threshold frequency of Gold with 7.8x10^-19 J Work Function.

A: The relation of the threshold frequency and the energy as φ=hν

Q: Obtain the expression for the average thermal energy when the partition function is Z: ħo (A) 극청고 2…

A: Let Z denote the partition function, kB denote the Boltzmann constant, T denote the temperature, ħ…

Q: Calculate the value of ni in germanium at a temperature of 300 K.

A: Intrinsic carrier density: The intrinsic carrier density/concentration is defined as the number of…

Q: A fermion gas assembly consists of three energy bands whose weights are 2, 3 and 4, respectively.…

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Q: Q. No 02: a) Consider a system of two identical particles occupying any of three energy levels A, B…

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Q: What is the number of occupied states in the energy range of 0.0300 eV that is centered at a height…

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Q: at

A: Given: Critical temperature = 7.26 K Critical field = 5 x 105 A/m Temperature = 3 K

Q: An experiment was conducted to find the relationship between the spec heat of Potassium metal and…

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Q: Show that TV 32 Cp – Cy = %3D reduces to Cp-Cv = R for an ideal gas.

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Q: For the fixed-bias configuration, determine: d. Collector Voltage e. Base Voltage f. Emitter…

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Q: Derive a relation for Joule – Thomson coefficient for a gas whose equation of state is а (P+2) V =…

A: Joule-Thomson coefficient (μJT) be defined as, μJT=TCP∂V∂TP-V             ............1

Q: What is the probability that an O2 molecule in a sampleof oxygen at 300 K has a speed between 5.00 ×…

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Q: Suppose you know a material is p-type, and that the thermal equilibrium electron concentration is no…

A: Given:- The thermal equilibrium electron concentration is no = 2.0 x 1010 cm-3. Find:- What can you…

Q: Q10: Find the accurate probability for an electron to occupy a level 0.2eV under the Fermi level at…

A: The probability of finding an electron below a fermi level (E-Ef ) f(E)=11+e-EkT…

Q: A van der Waals dispersion force between helium atoms produces a very shallow potential well, with a…

A: The depth of potential is given as 1 meV. The energy needed to condense Helium be defined as,…

Q: For an ideal gas O2 at T = 293 K fi nd the two speeds v that satisfy the equation 2F(v) = F(v*).…

A: Given: An ideal gas of oxygen O2 Temperature: 293 [K] Maxwell`s distribution function: F(v) Mass of…

Q: A state 63 meV above the Fermi level has a probability of occupancy of 0.090.What is the probability…

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Q: At what pressure, in atmospheres, would the number of molecules per unit volume in an ideal gas be…

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Q: What's the difference between Compton and PV?

A: Crompton Effect :- When the high energy photon strike with the material it produces the electron…

Q: Silver contains 5.8 * 1028 free electrons per cubic meter. At absolute zero, what is the Fermi…

A: Free electron density in silver (n)=5.8 * 1028 per cubic meter mass of electron (m)=9.1×10-31Kg…

Q: estimate the excess temperature for a 1mm diameter horizontal 20cm long chromal wire submerged in a…

A: Given, Current=43A Voltage=14V Distance=20cm

Q: For a system of particles at room temperature, how large must € - μ be before the Fermi-Dirac,…

A: We know that Boltzmann distribution lies between Bose-Einstein and the Fermi-Dirac distributions. It…

Q: (i) What is the occupation number of fermi-level at 0°K.

A: From the question, it is given that- Temperature of system: T = 0o K

Q: The probability of finding an N2 molecule at ambient temperature at 515 m/s is zero. True or…

A: Required : True or False : The probability of finding an N2 molecule at ambient temperature at 515…

Q: calculate the fermi temperature for element X. where its fermi energy is 4.69 ev

A: Given data: Fermi energy (Ef)= 4.69 eV k = 1.3807 x 10-23 J/K Convert the energy eV to J 1 eV =…