Calculate the Debye specific heat of copper at , given that its Debye frequency is
.
The Debye temperature ( \Theta_D ) is related to the Debye frequency ( \omega_D ) by [ \Theta_D = \frac{\hbar \omega_D}{k_B} ] Given: (\omega_D = 4.11 \times 10^{13} , \text{rad/s}), (\hbar = 1.054 \times 10^{-34} , \text{J·s}), (k_B = 1.381 \times 10^{-23} , \text{J/K}). [ \Theta_D = \frac{(1.054 \times 10^{-34}) (4.11 \times 10^{13})}{1.381 \times __________ ___ ____ ___ _______ _______ _______ _________ ______ ____ ____ ____.
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Si के एक p-n संधि में तापमान पर निर्मित विभव परिकलित करें यदि दिया गया हो कि
है और
तापमान पर Si में
है।
बताएं कि निम्नलिखित में से कौन से आयन कोणीय संवेग शमन प्रदर्शित करेंगे और क्यों :
Ti3+, Gd3+, Ni2+
A monovalent metal has a bcc structure and its lattice parameter is . Calculate its Fermi energy.
Write down the electronic configuration of the atom. What type of bonding would you expect to find in
?
The values of the elastic stiffness constants for are:
Given that the density of is
, determine the bulk modulus of elasticity and the velocity of the transverse and longitudinal elastic waves in the [100] direction.
The electronic and lattice heat capacities for copper at are
and
respectively. What do you conclude from these magnitudes?
The Fermi energy for silver is . Which of the following is true : (a) the density of energy states is greater at
(b) the density of energy states is greater at
or (c) the density of energy states is same near both energies?