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Recent questions tagged molecules and crystals
+2
votes
1
answer
Evaluate the propagation velocity of acoustic vibrations in aluminium whose Debye temperature is θ = 396 K.
asked
Mar 30, 2019
in
Physics
by
kratos
irodov
jee
molecules and crystals
jee mains
nuclear physics
+2
votes
1
answer
Derive Eq. (6.4c), making use of the Boltzmann , distribution. From Eq. (6.4c) obtain the expression for molar vibration heat capacity
asked
Mar 26, 2019
in
Physics
by
kratos
irodov
jee mains
jee
nuclear physics
molecules and crystals
+1
vote
1
answer
Discuss modes of vibration of air column in a closed pipe.
asked
Mar 22, 2019
in
Physics
by
kratos
irodov
waves
neet
cbse
class-11
jee
aiims
thermodynamics
molecules and crystals
statistical physics
jee mains
nuclear physics
+3
votes
1
answer
A diatomic molecule has moment of inertia I. By Bohr’* quantization condition its rotational energy in the n^th level (n = 0 is not allowed) is
asked
Mar 16, 2019
in
Physics
by
kratos
irodov
cbse
atomic and nuclear physics
jee
molecules and crystals
jee mains
class-12
atoms
nuclear physics
nuclei
+1
vote
1
answer
The distance between images of A and B will be 4f at time t =
asked
Mar 9, 2019
in
Physics
by
kratos
classification of elements and periodicity in properties
irodov
class-11
jee
molecules and crystals
optics
jee mains
class-12
nuclear physics
structure of atom
+2
votes
1
answer
Calculate the interval (in eV units) between neighbouring levels of free electrons in a metal at T = 0 near the Fermi level,
asked
Mar 8, 2019
in
Physics
by
kratos
irodov
jee
molecules and crystals
jee mains
nuclear physics
+1
vote
1
answer
Find the number of free electrons per one sodium atom at T = 0 if the Fermi level is equal to EF = 3.07 eV
asked
Feb 26, 2019
in
Physics
by
kratos
irodov
jee
molecules and crystals
jee mains
nuclear physics
+1
vote
1
answer
Making use of Eq. (6.4g), find at T= 0: (a) the velocity distribution of free electrons;
asked
Feb 19, 2019
in
Physics
by
kratos
irodov
jee
molecules and crystals
jee mains
nuclear physics
+1
vote
1
answer
The empirical mass formula (neglecting a term representing the odd – even effect) is M(A, Z)
asked
Feb 15, 2019
in
Physics
by
kratos
irodov
jee
dynamics of machines
molecules and crystals
jee mains
nuclear physics
mechanism for control
+1
vote
1
answer
In Hall effect measurements a plate of width h = 10 mm and length l = 50 mm made of p-type semiconductor
asked
Jan 21, 2019
in
Physics
by
kratos
irodov
jee
molecules and crystals
jee mains
nuclear physics
+2
votes
1
answer
At very low temperatures the photoelectric threshold short wavelength in an impurity-free germanium is equal to λth = 1.7 μm.
asked
Jan 20, 2019
in
Physics
by
kratos
irodov
jee
molecules and crystals
jee mains
nuclear physics
+2
votes
1
answer
Assuming the propagation velocities of longitudinal and transverse vibrations to be the same and equal to v, find the Debye temperature
asked
Jan 17, 2019
in
Physics
by
kratos
irodov
jee
molecules and crystals
jee mains
nuclear physics
+1
vote
1
answer
In a chain of identical atoms the vibration frequency ω depends on wave number k as ω= ωmax sin (ka/2),
asked
Jan 15, 2019
in
Physics
by
kratos
irodov
jee
molecules and crystals
jee mains
nuclear physics
+3
votes
1
answer
Evaluate how many lines there are in a true rotational spectrum of CO molecules whose natural vibration frequency
asked
Jan 7, 2019
in
Physics
by
kratos
irodov
jee
molecules and crystals
jee mains
nuclear physics
+2
votes
1
answer
Find the number of rotational levels per unit energy interval, dN/dE, for a diatomic molecule as a function of rotational energy E.
asked
Jan 2, 2019
in
Physics
by
kratos
irodov
jee
molecules and crystals
jee mains
nuclear physics
+1
vote
1
answer
Find the minimum energy of electron-**** pair formation in an impurity-free semiconductor whose electric conductance
asked
Dec 26, 2018
in
Physics
by
kratos
irodov
jee
molecules and crystals
jee mains
nuclear physics
+2
votes
1
answer
Employing Eq. (6.4g), find at T = 0: (a) the maximum kinetic energy of free electrons in a metal
asked
Nov 26, 2018
in
Physics
by
kratos
irodov
jee
molecules and crystals
jee mains
nuclear physics
+2
votes
1
answer
Fig. 6.11 illustrates logarithmic electric conductance as a function of reciprocal temperature (T in kK units)
asked
Nov 20, 2018
in
Physics
by
kratos
irodov
jee mains
jee
nuclear physics
molecules and crystals
+3
votes
1
answer
In the middle of the rotation- vibration band of emission spectrum of HCl molecule, where the "zeroth" line is forbidden
asked
Nov 10, 2018
in
Physics
by
kratos
irodov
jee
molecules and crystals
jee mains
nuclear physics
+3
votes
1
answer
In Hall effect measurements in a sodium conductor the strength of a transverse field was found to be equal to E = 5.0 μV/cm
asked
Nov 5, 2018
in
Physics
by
kratos
irodov
electrodynamics
jee
magnetic field
molecules and crystals
jee mains
nuclear physics
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