List of top Questions asked in CUET (PG)

The energies involved in the process of domain growth are:
A. Exchange energy
B. Anisotropic energy
C. Domain Wall energy
D. Magnetostrictive energy
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Paramagnetic materials behaves as diamagnetic materials :

Which of the following is true for hard magnetic materials:

The effective density of states of electrons (\(N_c\)) at the conduction band edge of the intrinsic semiconductor varies with temperature, as:

In Laue's technique of X-ray diffraction, a single crystal is held stationary and the beam of white radiation of wavelength \(\lambda\) is inclined at which condition with glancing angle (\(\theta\)):

Which current does not contribute to a uniformly doped semiconductor:

The vector form of Bragg's law is used in the construction of:

Which type of liquid crystal has its structure twisted about the helical axis lying perpendicular to the orientation of molecules?

The coordination number and volume of unit cell of hexagonal closed packed structure are respectively:

The number of atoms per unit cell of SCC are:

The correct statements about SC lattice are:
A. The number of atoms per unit cell is 1
B. Its packing factor is 0.52
C. Iron is an example of SC lattice
D. Its Coordination Number is 6
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Diamond exhibits which type of structures:

Which statements are true for total internal reflection?
A. The angle of incidence must be greater than the critical angle
B. light goes from an optically denser medium to an optically rarer medium.
C. light goes from an optically rarer medium to an optically denser medium.
D. The critical angle depends on the refractive index of both media.
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Choose the correct sequence of operations in the Carnot cycle.
A. Isothermal expansion of gas.
B. Isothermal compression of gas.
C. Adiabatic compression of gas.
D. Adiabatic expansion of gas.
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Match the LIST-I with LIST-II

LIST-I	LIST-II
A. Mobility of electrons (\(\mu\))	I. \( Ne^2\tau/m \)
B. Drift velocity of electrons (\(v_d\))	II. \( \mu E \)
C. Electrical conductivity of conduction electrons (\(\sigma\))	III. \( \mu m/e \)
D. Relaxation time of electrons (\(\tau\))	IV. \( 1/\rho ne \)

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Match the LIST-I with LIST-II

LIST-I	LIST-II
A. Brillouin Zone	Provides the understanding of the origin of allowed and forbidden bands in solids.
B. Extended Zone Scheme	The electrons in a crystal behave like free electrons for most of the \( k \) values except when it approaches \( n\pi/a \).
C. Periodic Zone Scheme	The E-k curve for several values of \( n \) reduced into the first zone for a simple cubic lattice with vanishing potential.
D. Reduced Zone Scheme	The E-K curve is not continuous and has discontinuities at \( k = \pm n\pi/a \), where \( n=1,2,3,\dots \).

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Domain theory explains:

The effective mass of an electron is ______________________________ in the lower part of the band and ______________________________ near the zone boundary (k\(\sim\)\(\pi\)/a).

Electronic magic numbers of atoms are:
A. 2
B. 15
C. 10
D. 18
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Which of the following option is correct related to the application of elastic hysteresis?

For temperature greater than 0 K, the fermi level is the level where the probability of occupation of electrons is:

Match the LIST-I with LIST-II

LIST-I (Aberrations)	LIST-II (Consequences)
A. Spherical aberration	I. image of a point object as a disc
B. Coma	II. spreading of the image along the principal axis
C. Astigmatism	III. Line object is not imaged into a line
D. Distortion	IV. Image of a point object is a blurred surface

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The steps involved in determining the Miller indices are:
A. Take the reciprocal of these intercepts.
B. Simplify the fraction.
C. Enclose the obtained numbers into parentheses.
D. Find the intercepts of the plane on the crystallographic axes.
Choose the correct answer from the options given below:

What is the effect of temperature on magnetic susceptibility of ferromagnetic materials?

According to the Bloch theorem, which of the following equations is the correct form for Bloch functions: