JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD B.Tech I Year APPLIED PHYSICS Previous Question Paper (March/April - 2023 - R22)
Part-A is a compulsory question (10 marks). Part-B consists of ten questions (50 marks), answer one from each unit (five questions in total).
Part A
What is blackbody?
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Define Symmetry in solids
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State Hall effect.
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List out applications of BJT.
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State pyroelectric.
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What are the applications of Energy Materials?
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Define Nano.
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Illustrate applications of nanomaterials.
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What is acronym LASER?
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What is total internal reflection?
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Part B
Explain Stefan-Boltzmann’s law.
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Discuss Born interpretation of the wave function.
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List out assumptions of Drude & Lorentz free electron theory.
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Explain Fermi-Dirac distribution of electrons.
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Explain working principle of Zener diode.
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Illustrate working mechanism of PIN diode in forward and reserve bias.
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With a neat diagram, describe working principle of Avalanche Photo Diode (APD).
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Distinguish between intrinsic and extrinsic semiconductors.
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What is ferroelectricity? Explain properties of ferroelectric materials.
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Write a note on bubble memory devices.
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Write a note on multiferroics.
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Explain construction and working principle of rechargeable ion batteries.
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Explain quantum confinement phenomenon.
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Discuss fabrication of nanomaterials using Physical Vapor Deposition (PVD).
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Write a note on combustion methods.
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Discuss surface to volume ratio in nanomaterials.
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Describe construction and working mechanism of Nd:YAG laser.
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Write a note on optical fiber for communication system
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Discuss construction and working principle of Argon ion Laser.
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Derive an expression for acceptance angle numerical aperture.
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