Distinguish between Direct energy band gap semiconductor and Indirect energy band gap semiconductor with any four points.
Explain in details about Kroning-Penney model and discuss the different cases with necessary diagrams.
The energy gap of two intrinsic semiconductors A and B are 0.36 eV and 0.72 eV respectively. Compare the carrier density of semiconductors A and B at temperature 300 K.
Distinguish between Spontaneous Emission and Stimulated emission with any three points.
Derive the expression for Fermi energy and carrier concentration in N-type semiconductor.
Distinguish between N-type semiconductor and P-type semiconductor with any four points.
What are the processes known as carrier generation and recombination? Explain the Optical Generation and recombination process for charge carriers.
The values of critical magnetic field for a superconductor are 270 T and 60 T at temperature 20 K and 90 K respectively. Calculate the values of critical temperature and zero magnetic field.
Name the types of capacitances are associated with PN junction and briefly explain each of them.
Explain the Four Probe method and derive the necessary formula to find the resistivity of Balk material.
For a metal having density of electron is 6.5 × 1028 then find the relaxation time of conduction electrons if the metal resistivity is 1.435 × 10-8 ohm-meter
Explain the Vander Pauw measurement method. Discuss about the measurement of Resistivity of the material by this method.
Discuss about Meissner’s effect with diagrams and prove that the superconductors are perfect diamagnetic material.
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Official Gujarat Technological University (GTU) examination paper and step-by-step solutions for Physics (Winter 2024, B.E. · Common Engineering, Sem 1). Features complete 70-mark regular & remedial examination pattern, official marking distribution across all 5 questions, and direct 1-click official PDF download.
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