Jawaharlal Nehru Technological University Hyderabad
Jawaharlal Nehru Technological University Hyderabad B.Tech I Year ENGINEERING PHYSICS Previous Question Paper (December 2019/January 2020 - R13)
Note: This question paper contains two parts A and B. Part A is compulsory which carries 25 marks. Answer all questions in Part A. Part B consists of 5 Units. Answer any one full question from each unit. Each question carries 10 marks and may have a, b, c as sub questions.
Part A
Define Ionic bond.
Answer
An Ionic bond is a type of chemical bond formed through the electrostatic attraction between oppositely charged ions, typically resulting from the complete transfer of electrons from a metal atom to a non-metal atom.
Explain Burger’s vector.
Answer
Burger’s vector is a vector that represents the magnitude and direction of the lattice distortion caused by a dislocation in a crystal. It is determined by completing a closed circuit around the dislocation line in a perfect crystal and comparing the path to the same circuit in the dislocated crystal; the vector required to close the loop is the Burger’s vector.
Name the experiments which supports concept of the dual nature of light?
Answer
Sign in to view the complete answer paper.
Draw E-K diagram.
Answer
Sign in to view the complete answer paper.
Define Electric Susceptibility.
Answer
Sign in to view the complete answer paper.
Explain Meissner Effect.
Answer
Sign in to view the complete answer paper.
What is Interference?
Answer
Sign in to view the complete answer paper.
Explain Lasing Action.
Answer
Sign in to view the complete answer paper.
Explain the term Nano Scale.
Answer
Sign in to view the complete answer paper.
Distinguish between Direct and Indirect Band gap semiconductors.
Answer
Sign in to view the complete answer paper.
Part B
Write a note on Hydrogen Bond.
Answer
Sign in to view the complete answer paper.
Calculate packing factor of BCC.
Answer
Sign in to view the complete answer paper.
Derive an expression of Bragg’s Law.
Answer
Sign in to view the complete answer paper.
Define Vander-Waal’s Bond.
Answer
Sign in to view the complete answer paper.
Estimate Cohesive Energy of diatomic molecule.
Answer
Sign in to view the complete answer paper.
With a diagram explain Powder method.
Answer
Sign in to view the complete answer paper.
Drive an expression of de-Broglie’s hypothesis.
Answer
Sign in to view the complete answer paper.
Discuss Density of States.
Answer
Sign in to view the complete answer paper.
What are Matter Waves?
Answer
Sign in to view the complete answer paper.
Derive Schrödinger’s Time independent wave equation.
Answer
Sign in to view the complete answer paper.
Discuss Kronig-Penny Model.
Answer
Sign in to view the complete answer paper.
Derive an expression of concept of effective mass of an electron.
Answer
Sign in to view the complete answer paper.
Derive an equation for Ionic polarizability.
Answer
Sign in to view the complete answer paper.
What is Hysteresis curve? Explain it using domain theory of ferro magnetism.
Answer
Sign in to view the complete answer paper.
Distinguish between Anti-Ferro and Ferri magnetic materials.
Answer
Sign in to view the complete answer paper.
Derive an expression of Clausius - Mossotti equation.
Answer
Sign in to view the complete answer paper.
Distinguish between Soft and Hard Magnetic Materials.
Answer
Sign in to view the complete answer paper.
What is Ferro-electricity? Explain in details.
Answer
Sign in to view the complete answer paper.
In detail discuss Newton rings experiment.
Answer
Sign in to view the complete answer paper.
With neat diagram explain working principle and construction of He-Ne Laser.
Answer
Sign in to view the complete answer paper.
Explain construction and working of Nicol’s Prism.
Answer
Sign in to view the complete answer paper.
Write a note on Semiconductor diode laser.
Answer
Sign in to view the complete answer paper.
Explain working principle and construction of LED.
Answer
Sign in to view the complete answer paper.
What are the factors affecting the architectural acoustics.
Answer
Sign in to view the complete answer paper.
Explain the term surface to volume ratio.
Answer
Sign in to view the complete answer paper.
Define Reverberation of Time.
Answer
Sign in to view the complete answer paper.
Explain working principle of Photo Diode.
Answer
Sign in to view the complete answer paper.
Write a note on Quantum Confinement.
Answer
Sign in to view the complete answer paper.