Firstranker's choice
Code: 13A56101
--- Content provided by FirstRanker.com ---
B.Tech I Year (R13) Supplementary Examinations December/January 2014/2015
ENGINEERING PHYSICS
(Common to all branches)
Time: 3 hours Max. Marks: 70
PART - A
--- Content provided by FirstRanker.com ---
(Compulsory Question)
Answer the following: (10 X 02 = 20 Marks)
- What is an optical resonator?
- What is meant by total internal reflection?
- What is Schottky defect?
- What is Piezoelectricity?
- What is Hiesenberg's uncertainty principle?
- What are the sources of electrical resistance?
- What is the direct band-gap semiconductor?
- Define hysteresis.
- What is flux quantization?
- What is meant by quantum confinement?
--- Content provided by FirstRanker.com ---
--- Content provided by FirstRanker.com ---
PART - B
(Answer all five units, 5 × 10 = 50 Marks)
UNIT - I
--- Content provided by FirstRanker.com ---
- (a) How do you determine wave length of light using Newton's rings experiment?
(b) Newton's rings are observed in the reflected light of wave length 5900 Aº. The diameter of 10th dark ring is 0.5 cm. Find the radius of curvature of lens used?
OR - (a) Define absorption, stimulated emission and population inversion.
(b) Differentiate single mode and multimode fibres
--- Content provided by FirstRanker.com ---
UNIT - II
- What is non destructive testing? How ultrasonics are used in non destructive testing of materials?
- What are Miller indices? Determine the expression for inter planer spacing in terms of Miller indices.
UNIT - III
- (a) Derive an expression for energy level of a particle in one dimensional potential well.
--- Content provided by FirstRanker.com ---
(b) What are the properties of matter waves?
OR - Discuss the motion of electron in a periodic potential.
UNIT - IV
- (a) Obtain an expression for Hall coefficient.
--- Content provided by FirstRanker.com ---
(b) Explain the working of LED.
OR - (a) Explain soft and hard magnetic materials.
(b) A magnetic material has a magnetization of 3300 A/m and flux density of 0.0044 Wb/m². Calculate magnetizing force and the relative permeability of the material.
UNIT - V
--- Content provided by FirstRanker.com ---
- (a) Prove that superconductor is a very good diamagnetic material.
(b) Explain BCS theory of superconductors.
OR - (a) How the optical and magnetic properties change during the transition from bulk to nano?
(b) Write application of nanomaterials.
--- Content provided by FirstRanker.com ---
This download link is referred from the post: JNTU Anantapur B-Tech 1-1 last 10 year question papers 2010 -2020 -All regulation- All branches- 1st Year 1st Sem
--- Content provided by FirstRanker.com ---