Question

Explain Basis Vectors?
Define Primitive and Non –Primitive Unit cell?
Compare simple cubic, face centered cubic, body centered cubic lattices of a unit cell?
Explain Miller indices?
Explain powder crystal method?
Explain FCC and Tetrahedral structure?
Explain the interplanar spacing between the planes?
The first order reflection of a crystal for an x-ray wavelength 2A is observed at30 Find out the interatomic spacing?
Name the different types of bonding in solids and explain briefly?
How is covalent bonding is different from other bonding?
Explain the formation of NaCl based on ionic bonding?
Explain De Broglie Hypothesis?
Verify De Broglie waves using davisson experiment?
Explain Uncertainty principle?
Explain Wave function?
Calculate the uncertainties in energy and time using Uncertainty principle?
What is Fermi energy?
Briefly explain electron diffraction experiment?
Prove that the probability density is always a positive real quantity?
Define magnetic susceptibility in detail?
Write the expressions for De-Broglie wavelength?
Explain different types of magnetism?
Explain the concept of Weiss theory of ferromagnetism?
Explain antiferromagnetism and ferrimagnetism?
What is meant by ferromagnetic domains?
Define bloch wall?
Define Meissner effect or perfect diamagnetism?
Define critical field?
Explain briefly the types of superconductors?
What are the applications of superconductors?
Explain X-ray diffraction in detail?
Explain brillouin zone?
Define Bloch’s theorem?
Define hall effect?
What are the limitations of free electron model?
Explain energy band?
Explain Fermi level?
Explain free electron model?
Write a short note on dual nature?
What is meant by drift velocity?
Define mobility and conductivity of intrinsic semiconductor?
What are n –type and p- type semiconductors? How are they produced?
Explain the distribution of electrons in metals, insulators and semiconductors?
Why do we need doping? How it is done?
Explain hall effect?
Explain motion of electrons in magnetic field?
Define a) drift velocity
b) mobility
c) electrical conductivity in intrinsic semiconductor
48) Define intrinsic semiconductor (pure)?
49) Define extrinsic semiconductor (impure)?
50) What is meant by semiconductor? Explain its band structure/?
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Answer 1

Explanation:

1. A basis vector is one vector of a basis, and a basis has a clear definition: it is a family of linearly independent vectors which spans a given vector space. ... For example, (0,3) and (2,0) form a basis of the plane (seen as a R-vector space). So both (0,3) and (2,0) are basis vectors.
2. Primitive unit cells contain only one lattice point, which is made up from the lattice points at each of the corners. ... Non-primitive unit cells contain additional lattice points, either on a face of the unit cell or within the unit cell, and so have more than one lattice point per unit cell.
3. body-centered cubic: There is one atom or ion in the center of the unit cell in addition to the corner atoms or ions. face-centered cubic: There are also atoms or ions in the center of each of the six faces of the unit cell. simple cubic: The atoms or ions are at the corners of the unit cell only.
4. Miller indices, group of three numbers that indicates the orientation of a plane or set of parallel planes of atoms in a crystal. ... In the hexagonal system, which has four crystallographic axes, a similar scheme of four Bravais-Miller indices is used.
5. The powder method is used to determine the value of the lattice parameters accurately. Lattice parameters are the magnitudes of the unit vectors a, b and c which define the unit cell for the crystal. ... A sample of some hundreds of crystals (i.e. a powdered sample) show that the diffracted beams form continuous cones.
6. A face-centered cubic unit cell structure consists of atoms arranged in a cube where each corner of the cube has a fraction of an atom with six additional full atoms positioned at the center of each cube face. The atoms at the corner of the cube are shared with eight other unit cells.
7. The interplanar spacing or interplanar distance is the perpendicular distance between two successive planes in a family (h k l). It is commonly indicated as dhkl and corresponds to the reciprocal of the length of the corresponding vector in reciprocal space.
8. Sorry I don't know the answer
9. Covalent bonding, which forms network covalent solids (sometimes called simply "covalent solids") Ionic bonding, which forms ionic solids. Metallic bonding, which forms metallic solids. Weak inter molecular bonding, which forms molecular solids (sometimes anomalously called "covalent solids")
10. Nonmetals can form different types of bonds depending on their partner atoms. Ionic bonds form when a nonmetal and a metal exchange electrons, while covalent bonds form when electrons are shared between two nonmetals.
11. When sodium (Na) and chlorine (Cl) are combined, the sodium atoms each lose an electron, forming cations (Na+), and the chlorine atoms each gain an electron to form anions (Cl−). These ions are then attracted to each other in a 1:1 ratio to form sodium chloride (NaCl). Na + Cl → Na+ + Cl− → NaCl.
12. De Broglie's hypothesis of matter waves postulates that any particle of matter that has linear momentum is also a wave. The wavelength of a matter wave associated with a particle is inversely proportional to the magnitude of the particle's linear momentum. The speed of the matter wave is the speed of the particle.
13. De Broglie gave a hypothesis of the dual nature of particles and waves. This hypothesis is confirmed by the Davisson Germer experiment. G.P. Thomson did a cathode ray tube experiment and found the negatively charged subatomic particle. Rutherford did the gold foil experiment.
14. uncertainty principle, also called Heisenberg uncertainty principle or indeterminacy principle, statement, articulated (1927) by the German physicist Werner Heisenberg, that the position and the velocity of an object cannot both be measured exactly, at the same time, even in theory.
15. wave function, in quantum mechanics, variable quantity that mathematically describes the wave characteristics of a particle. The value of the wave function of a particle at a given point of space and time is related to the likelihood of the particle's being there at the time.

sorry I can answer u only 15 pl make me brainlist pl pl