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Code: 15A56103
B.Tech I Year I Semester (R15) Supplementary Examinations November/December 2019
BASIC PHYSICS
(Food Technology)
Time: 3 hours Max. Marks: 70
PART ? A
(Compulsory Question)
*****
1 Answer the following: (10 X 02 = 20 Marks)
(a) What is polarization?
(b) Define gradient of a scalar field.
(c) What are electromagnetic waves?
(d) Define a non-inertial reference frame.
(e) What is Heisenberg uncertainty principle?
(f) What is population inversion?
(g) What is forbidden energy gap?
(h) Define Bravais Lattices.
(i) What is Fermi-energy?
(j) What is radioactive decay?
PART ? B
(Answer all five units, 5 X 10 = 50 Marks)
UNIT ? I
2 Write the differential equation for the damped oscillation of a particle and solve it. Also discuss
various cases.
OR
3 State and explain Gauss divergence theorem.
UNIT ? II
4 Derive Maxwell?s equations and give their physical interpretation.
OR
5 What are Galilean transformations? Derive Galilean transformation equation for two inertial frames.
UNIT ? III
6 (a) What are the failures of classical physics?
(b) Derive an expression for the wavelength of matter waves.
OR
7 How to construct and reconstruct a hologram?
UNIT ? IV
8 State and explain Bragg?s law. Mention its applications.
OR
9 Differentiate conductors, semiconductors and insulators.
UNIT ? V
10 Discuss various models to explain the properties of nucleus.
OR
11 (a) What are the similarities and dissimilarities between nuclear fission and fusion?
(b) Write a note on elementary particles.
*****
R15
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This post was last modified on 11 September 2020