Equilibrium shapes can be determined experimentally by________

Annealing large void inside a crystals

Annealing large crystals at high temperature

Annealing small crystals at low temperature

Annealing small void inside a crystals

If we plot (angle between the crystal plane and closed packed plane) vs E (total surface energy), all the low index planes should be located at________

In between the low energy cusps and high energy cusps

14 + Mcqs in Solid and Vapour Interfaces Page 1 McqOptions

Explore topic-wise MCQs in Phase Transformation.

For the given notation {222}, the spacing of equivalent atom plane is given by________ (Take the lattice parameter a as 2)

When the macroscopic surface plane has a high or irrational {h k l} index the surface will appear as a stepped layer structure where each layer is a close packed plane.

Equilibrium shapes can be determined experimentally by________

The equilibrium shape has the property that the summation of Ai* i (Ai represents the planes and i their respective surface energies) is a minimum and the shape that satisfies this condition is given by the following, so-called as _________

If we plot (angle between the crystal plane and closed packed plane) vs E (total surface energy), all the low index planes should be located at________

For an isolated crystal bounded by the planes A1, A2, with energies 1 and 2 the total surface energy will be given by _______

A crystal plane is at an angle 45 to the close-packed plane. Calculate the energy of the surface, attributing E/2 energy to each broken bond? (Take the a value as 1(lattice parameter))

Melting point of Sn, Ag, Al, and Au are 232, 961, 660, and 1063(In Degree Celsius) given in their respective order. Which among the following values mentioned below corresponds to the surface energy of Sn? (Options corresponds to the surface energy of the above mentioned 4 elements in mJ m-2)

Extra configurational entropy can also be introduced into the surface by the formation of surface vacancies. Entropy effects is slightly dependent on temperature and is given as, = -2T+2. Calculate the entropy S from the given condition?

Considering the nearest neighbours it can be seen that the atoms on a {111} surface, for example, are deprived of three of their twelve neighbours.

Surface free energy is given by_____

If 1 mol of solid is vaporized 12Na broken bonds are formed. Therefore L (Latent heat of sublimation) = 12 Na*E/2(E is the bond strength of metal). Consequently the energy of a {111} surface is given as ___

Which among the following plane has the least density of atoms?

Melting point of Sn, Ag, Al, and Au are 232, 961, 660, and 1063(In Degree Celsius) given in their respective order. Which among the following values mentioned below corresponds to the surface energy of Sn? (Options corresponds to the surface energy of the above mentioned 4 elements in mJ m^-2)