GATE Solid State Physics: lattice vibrations and thermal properties of solids – Previous Year Questions
6 GATE previous year questions on lattice vibrations and thermal properties of solids (Solid State Physics, Physics) with answers and explanations, from every paper.
- GATE 2022 PH Q43 – In a two-dimensional square lattice, frequency ω of phonons in the long wavelength limit changes linearly with the wave vector k. Then the density of…
- GATE 2023 PH Q19 – For a non-magnetic metal, which one of the following graphs best represents the behaviour of C T vs. T2, where C is the heat capacity and T is the…
- GATE 2023 PH Q46 – In the first Brillouin zone of a rectangular lattice (lattice constants a= 6 Å and b= 4 Å), three incoming phonons with the same wave vector 〈1.2 Å−1,…
- GATE 2023 PH Q47 – For ions of mass m, U(r)=-(r/r 0)e-r/r 0. What is the Einstein frequency in Hz?
- GATE 2025 PH Q34 – Consider a monatomic chain of length 30 cm. The phonon density of states is 1.210-4 s. Assuming the Debye model, the velocity of sound in m/s (rounded…
- GATE 2024 PH Q54 – Apart from the acoustic modes, 9 optical modes are identified from the measurements of phonon dispersions of a solid with chemical formula AnBm, where…