ANNAMACHARYA INSTITUTE OF TECHNOLOGY & SCIENCES :: RAJAMPET
(AUTONOMOUS)
I B. Tech II Semester (R20 Regulations) Regular Examinations - July/August - 2021
ENGINEERING PHYSICS (20ABS202)
Time: 3 Hours Max. Marks: 70
Answer all the Questions
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PART - A
5 x 2 = 10 Marks
1. a) Write the differences between Single mode and Multimode optical fiber.
b) Define magnetic susceptibility and permeability.
c) What is meant by Piezoelectric effect? Mention its applications.
d) Explain the concept of Wave-Particle duality.
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e) What are the differences between direct and indirect band gap semiconductors?PART - B
5 x 12 = 60 Marks
2. a) Describe the construction and working of optical fiber.
b) Derive an expression for Acceptance angle and Numerical Aperture.
(OR)
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c) Explain different types of losses in optical fibers.d) Mention the applications of optical fibers.
3. a) Define Hysteresis. Explain the Hysteresis loop based on domain theory of Ferromagnetism.
(OR)
b) Explain the terms: i) Electronic polarization ii) Ionic polarization iii) Orientation polarization
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4. a) Describe the construction and working of Solar cell with a neat diagram.
(OR)
b) Define the terms: i) Magnetostriction ii) Piezoelectric effect. Mention their applications.
5. a) Derive Schrodinger's time independent wave equation.
(OR)
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b) State Heisenberg's Uncertainty Principle. Explain its significance. Show that electron cannot exist inside the nucleus.6. a) Derive the expression for carrier concentration in intrinsic semiconductor.
(OR)
b) Explain the formation of P-N junction diode and discuss the V-I characteristics.
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This download link is referred from the post: AKTU B-Tech Last 10 Years 2010-2020 Previous Question Papers || Dr. A.P.J. Abdul Kalam Technical University
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