List of top Questions asked in CUET (PG)

Which current does not contribute to a uniformly doped semiconductor:

Carbon nanotube shows magneto-resistive effects:

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

Under the elastic limit, Poisson's ratio is:

Scanning Tunneling Microscopy is based on:

Atomic Force Microscopy monitors:

Lithography is:

Copper has FCC structure with a lattice constant 3.61 Å. The radius of the copper atom is:

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

Which of the following relations are correct for the cubic crystal:
A. a = b \( \neq \) c
B. a = b = c
C. \( \alpha = \beta = \gamma = 90^\circ \)
D. \( \alpha \neq \beta = \gamma = 90^\circ \)
Choose the correct answer from the options given below:

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
Choose the correct answer from the options given below:

Diamond exhibits which type of structures:

The potential energy of a system of two atoms is given by the expression \( U = -A/r^2 + B/r^{10} \). A stable molecule is formed with the release of 8.0 eV of energy, when the interatomic distance is 2.8 Å. The values of A and B are:

The elastic energy density of a stretched wire is given by:

Which of the following statements are correct:
A. In SC structure a = 2r
B. In SC structure a = r/2
C. In BCC structure a = \( 4r/\sqrt{3} \)
D. In FCC structure a = \( 2\sqrt{2} r \)
Where a is a lattice parameter and r is the atomic radius.

Which of the following option is correct related to the application of elastic hysteresis?

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

In 3-dimensional system, the mean energy of an electron in electron gas at absolute zero is __________________________ of fermi energy, \(E_f(0)\) at absolute zero.

Select the correct sequence:
A. Zeroth law of thermodynamics
B. First law of thermodynamics
C. Second law of thermodynamics
D. Third law of thermodynamics
Choose the correct answer from the options given below:

How does the gas constant R is related to the universal gas constant \(\bar{R}\) and molecular mass M?

Match the LIST-I with LIST-II
\begin{tabular}{|l|l|} \hline LIST-I & LIST-II
\hline A. If heat is added to the system & I. \(Q<0\)
B. If heat is removed from the system & II. \(W>0\)
C. If work is done on the system & III. \(Q>0\)
D. If work is done by the system & IV. \(W<0\)
\hline \end{tabular}
Choose the correct answer from the options given below:

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.
Choose the correct answer from the options given below: